/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 07:15:56,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 07:15:56,014 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 07:15:56,054 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 07:15:56,054 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 07:15:56,056 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 07:15:56,057 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 07:15:56,069 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 07:15:56,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 07:15:56,079 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 07:15:56,080 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 07:15:56,081 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 07:15:56,082 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 07:15:56,083 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 07:15:56,084 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 07:15:56,085 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 07:15:56,086 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 07:15:56,087 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 07:15:56,089 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 07:15:56,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 07:15:56,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 07:15:56,097 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 07:15:56,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 07:15:56,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 07:15:56,101 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 07:15:56,105 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 07:15:56,106 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 07:15:56,107 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 07:15:56,107 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 07:15:56,108 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 07:15:56,109 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 07:15:56,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 07:15:56,110 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 07:15:56,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 07:15:56,111 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 07:15:56,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 07:15:56,113 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 07:15:56,145 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 07:15:56,145 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 07:15:56,146 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 07:15:56,146 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 07:15:56,147 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 07:15:56,147 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 07:15:56,148 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 07:15:56,148 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 07:15:56,148 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 07:15:56,148 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 07:15:56,149 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 07:15:56,150 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 07:15:56,150 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 07:15:56,150 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 07:15:56,150 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 07:15:56,150 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 07:15:56,151 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 07:15:56,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 07:15:56,151 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 07:15:56,151 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 07:15:56,151 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 07:15:56,152 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 07:15:56,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 07:15:56,152 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 07:15:56,152 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 07:15:56,152 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 07:15:56,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 07:15:56,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 07:15:56,561 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 07:15:56,563 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 07:15:56,564 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 07:15:56,565 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c [2020-12-22 07:15:56,640 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b45ede4de/1f5449b579f54840b6aa2bf423a1fe99/FLAGe9ca9f3e0 [2020-12-22 07:15:57,256 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 07:15:57,257 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c [2020-12-22 07:15:57,284 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b45ede4de/1f5449b579f54840b6aa2bf423a1fe99/FLAGe9ca9f3e0 [2020-12-22 07:15:57,561 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b45ede4de/1f5449b579f54840b6aa2bf423a1fe99 [2020-12-22 07:15:57,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 07:15:57,568 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 07:15:57,572 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 07:15:57,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 07:15:57,577 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 07:15:57,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:15:57" (1/1) ... [2020-12-22 07:15:57,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b90788d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:15:57, skipping insertion in model container [2020-12-22 07:15:57,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:15:57" (1/1) ... [2020-12-22 07:15:57,591 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 07:15:57,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 07:15:57,986 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c[14595,14608] [2020-12-22 07:15:57,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:15:57,999 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 07:15:58,071 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c[14595,14608] [2020-12-22 07:15:58,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:15:58,097 INFO L208 MainTranslator]: Completed translation [2020-12-22 07:15:58,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:15:58 WrapperNode [2020-12-22 07:15:58,098 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 07:15:58,101 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 07:15:58,102 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 07:15:58,102 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 07:15:58,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:15:58" (1/1) ... [2020-12-22 07:15:58,155 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:15:58" (1/1) ... [2020-12-22 07:15:58,256 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 07:15:58,259 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 07:15:58,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 07:15:58,260 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 07:15:58,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:15:58" (1/1) ... [2020-12-22 07:15:58,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:15:58" (1/1) ... [2020-12-22 07:15:58,297 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:15:58" (1/1) ... [2020-12-22 07:15:58,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:15:58" (1/1) ... [2020-12-22 07:15:58,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:15:58" (1/1) ... [2020-12-22 07:15:58,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:15:58" (1/1) ... [2020-12-22 07:15:58,370 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:15:58" (1/1) ... [2020-12-22 07:15:58,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 07:15:58,390 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 07:15:58,390 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 07:15:58,391 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 07:15:58,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:15:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 07:15:58,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 07:15:58,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 07:15:58,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 07:15:58,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 07:15:59,774 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 07:15:59,775 INFO L299 CfgBuilder]: Removed 121 assume(true) statements. [2020-12-22 07:15:59,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:15:59 BoogieIcfgContainer [2020-12-22 07:15:59,777 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 07:15:59,779 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 07:15:59,779 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 07:15:59,782 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 07:15:59,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:15:57" (1/3) ... [2020-12-22 07:15:59,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63398d44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:15:59, skipping insertion in model container [2020-12-22 07:15:59,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:15:58" (2/3) ... [2020-12-22 07:15:59,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63398d44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:15:59, skipping insertion in model container [2020-12-22 07:15:59,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:15:59" (3/3) ... [2020-12-22 07:15:59,786 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c [2020-12-22 07:15:59,793 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 07:15:59,798 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 23 error locations. [2020-12-22 07:15:59,817 INFO L253 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2020-12-22 07:15:59,846 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 07:15:59,846 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 07:15:59,846 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 07:15:59,846 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 07:15:59,847 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 07:15:59,847 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 07:15:59,847 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 07:15:59,847 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 07:15:59,872 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2020-12-22 07:15:59,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 07:15:59,880 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:15:59,881 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:15:59,882 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:15:59,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:15:59,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1350186974, now seen corresponding path program 1 times [2020-12-22 07:15:59,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:15:59,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175145447] [2020-12-22 07:15:59,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:00,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:00,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:00,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175145447] [2020-12-22 07:16:00,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:00,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 07:16:00,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4851869] [2020-12-22 07:16:00,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 07:16:00,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:00,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 07:16:00,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 07:16:00,170 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 2 states. [2020-12-22 07:16:00,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:00,228 INFO L93 Difference]: Finished difference Result 570 states and 889 transitions. [2020-12-22 07:16:00,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 07:16:00,229 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 33 [2020-12-22 07:16:00,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:00,245 INFO L225 Difference]: With dead ends: 570 [2020-12-22 07:16:00,246 INFO L226 Difference]: Without dead ends: 289 [2020-12-22 07:16:00,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 07:16:00,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-12-22 07:16:00,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2020-12-22 07:16:00,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2020-12-22 07:16:00,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 423 transitions. [2020-12-22 07:16:00,325 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 423 transitions. Word has length 33 [2020-12-22 07:16:00,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:00,326 INFO L481 AbstractCegarLoop]: Abstraction has 289 states and 423 transitions. [2020-12-22 07:16:00,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 07:16:00,326 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 423 transitions. [2020-12-22 07:16:00,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 07:16:00,328 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:00,329 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:00,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 07:16:00,329 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:00,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:00,330 INFO L82 PathProgramCache]: Analyzing trace with hash 346492376, now seen corresponding path program 1 times [2020-12-22 07:16:00,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:00,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73016412] [2020-12-22 07:16:00,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:00,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:00,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:00,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73016412] [2020-12-22 07:16:00,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:00,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:16:00,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990840480] [2020-12-22 07:16:00,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:16:00,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:00,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:16:00,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:16:00,443 INFO L87 Difference]: Start difference. First operand 289 states and 423 transitions. Second operand 4 states. [2020-12-22 07:16:00,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:00,521 INFO L93 Difference]: Finished difference Result 564 states and 820 transitions. [2020-12-22 07:16:00,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:16:00,522 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-12-22 07:16:00,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:00,526 INFO L225 Difference]: With dead ends: 564 [2020-12-22 07:16:00,526 INFO L226 Difference]: Without dead ends: 289 [2020-12-22 07:16:00,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:16:00,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-12-22 07:16:00,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2020-12-22 07:16:00,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2020-12-22 07:16:00,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 411 transitions. [2020-12-22 07:16:00,569 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 411 transitions. Word has length 33 [2020-12-22 07:16:00,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:00,569 INFO L481 AbstractCegarLoop]: Abstraction has 289 states and 411 transitions. [2020-12-22 07:16:00,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:16:00,570 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 411 transitions. [2020-12-22 07:16:00,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 07:16:00,574 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:00,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:00,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 07:16:00,576 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:00,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:00,577 INFO L82 PathProgramCache]: Analyzing trace with hash 792768919, now seen corresponding path program 1 times [2020-12-22 07:16:00,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:00,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430264383] [2020-12-22 07:16:00,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:00,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:00,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:00,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430264383] [2020-12-22 07:16:00,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:00,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:16:00,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074984241] [2020-12-22 07:16:00,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:16:00,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:00,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:16:00,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:00,832 INFO L87 Difference]: Start difference. First operand 289 states and 411 transitions. Second operand 3 states. [2020-12-22 07:16:00,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:00,922 INFO L93 Difference]: Finished difference Result 591 states and 849 transitions. [2020-12-22 07:16:00,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:16:00,923 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-12-22 07:16:00,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:00,931 INFO L225 Difference]: With dead ends: 591 [2020-12-22 07:16:00,932 INFO L226 Difference]: Without dead ends: 319 [2020-12-22 07:16:00,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:00,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-12-22 07:16:00,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 265. [2020-12-22 07:16:00,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-12-22 07:16:00,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 375 transitions. [2020-12-22 07:16:00,964 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 375 transitions. Word has length 44 [2020-12-22 07:16:00,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:00,964 INFO L481 AbstractCegarLoop]: Abstraction has 265 states and 375 transitions. [2020-12-22 07:16:00,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:16:00,965 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 375 transitions. [2020-12-22 07:16:00,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 07:16:00,966 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:00,967 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:00,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 07:16:00,967 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:00,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:00,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1551516849, now seen corresponding path program 1 times [2020-12-22 07:16:00,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:00,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108993252] [2020-12-22 07:16:00,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:01,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:01,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108993252] [2020-12-22 07:16:01,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:01,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:16:01,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716062151] [2020-12-22 07:16:01,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:16:01,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:01,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:16:01,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:01,147 INFO L87 Difference]: Start difference. First operand 265 states and 375 transitions. Second operand 3 states. [2020-12-22 07:16:01,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:01,192 INFO L93 Difference]: Finished difference Result 742 states and 1062 transitions. [2020-12-22 07:16:01,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:16:01,193 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-12-22 07:16:01,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:01,198 INFO L225 Difference]: With dead ends: 742 [2020-12-22 07:16:01,198 INFO L226 Difference]: Without dead ends: 494 [2020-12-22 07:16:01,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:01,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2020-12-22 07:16:01,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 300. [2020-12-22 07:16:01,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2020-12-22 07:16:01,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 427 transitions. [2020-12-22 07:16:01,224 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 427 transitions. Word has length 53 [2020-12-22 07:16:01,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:01,226 INFO L481 AbstractCegarLoop]: Abstraction has 300 states and 427 transitions. [2020-12-22 07:16:01,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:16:01,227 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 427 transitions. [2020-12-22 07:16:01,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 07:16:01,233 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:01,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:01,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 07:16:01,234 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:01,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:01,235 INFO L82 PathProgramCache]: Analyzing trace with hash -357597848, now seen corresponding path program 1 times [2020-12-22 07:16:01,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:01,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751723372] [2020-12-22 07:16:01,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:01,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:01,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:01,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751723372] [2020-12-22 07:16:01,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:01,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:16:01,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167628174] [2020-12-22 07:16:01,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:16:01,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:01,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:16:01,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:01,356 INFO L87 Difference]: Start difference. First operand 300 states and 427 transitions. Second operand 3 states. [2020-12-22 07:16:01,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:01,408 INFO L93 Difference]: Finished difference Result 822 states and 1181 transitions. [2020-12-22 07:16:01,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:16:01,409 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2020-12-22 07:16:01,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:01,413 INFO L225 Difference]: With dead ends: 822 [2020-12-22 07:16:01,413 INFO L226 Difference]: Without dead ends: 539 [2020-12-22 07:16:01,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:01,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2020-12-22 07:16:01,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 325. [2020-12-22 07:16:01,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2020-12-22 07:16:01,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 465 transitions. [2020-12-22 07:16:01,433 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 465 transitions. Word has length 54 [2020-12-22 07:16:01,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:01,434 INFO L481 AbstractCegarLoop]: Abstraction has 325 states and 465 transitions. [2020-12-22 07:16:01,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:16:01,434 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 465 transitions. [2020-12-22 07:16:01,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 07:16:01,437 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:01,437 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:01,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 07:16:01,438 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:01,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:01,439 INFO L82 PathProgramCache]: Analyzing trace with hash 322460522, now seen corresponding path program 1 times [2020-12-22 07:16:01,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:01,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355321028] [2020-12-22 07:16:01,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:01,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:01,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355321028] [2020-12-22 07:16:01,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:01,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:16:01,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607008208] [2020-12-22 07:16:01,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:16:01,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:01,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:16:01,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:16:01,578 INFO L87 Difference]: Start difference. First operand 325 states and 465 transitions. Second operand 5 states. [2020-12-22 07:16:01,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:01,863 INFO L93 Difference]: Finished difference Result 1007 states and 1452 transitions. [2020-12-22 07:16:01,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:16:01,863 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-12-22 07:16:01,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:01,869 INFO L225 Difference]: With dead ends: 1007 [2020-12-22 07:16:01,870 INFO L226 Difference]: Without dead ends: 699 [2020-12-22 07:16:01,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:16:01,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2020-12-22 07:16:01,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 419. [2020-12-22 07:16:01,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2020-12-22 07:16:01,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 596 transitions. [2020-12-22 07:16:01,894 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 596 transitions. Word has length 54 [2020-12-22 07:16:01,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:01,895 INFO L481 AbstractCegarLoop]: Abstraction has 419 states and 596 transitions. [2020-12-22 07:16:01,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:16:01,895 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 596 transitions. [2020-12-22 07:16:01,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 07:16:01,896 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:01,897 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:01,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 07:16:01,897 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:01,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:01,899 INFO L82 PathProgramCache]: Analyzing trace with hash -2009785193, now seen corresponding path program 1 times [2020-12-22 07:16:01,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:01,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342999838] [2020-12-22 07:16:01,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:01,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:02,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:02,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342999838] [2020-12-22 07:16:02,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:02,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:16:02,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978385503] [2020-12-22 07:16:02,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:16:02,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:02,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:16:02,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:16:02,016 INFO L87 Difference]: Start difference. First operand 419 states and 596 transitions. Second operand 5 states. [2020-12-22 07:16:02,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:02,293 INFO L93 Difference]: Finished difference Result 1011 states and 1452 transitions. [2020-12-22 07:16:02,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:16:02,293 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-12-22 07:16:02,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:02,297 INFO L225 Difference]: With dead ends: 1011 [2020-12-22 07:16:02,297 INFO L226 Difference]: Without dead ends: 703 [2020-12-22 07:16:02,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:16:02,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2020-12-22 07:16:02,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 427. [2020-12-22 07:16:02,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2020-12-22 07:16:02,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 604 transitions. [2020-12-22 07:16:02,322 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 604 transitions. Word has length 55 [2020-12-22 07:16:02,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:02,322 INFO L481 AbstractCegarLoop]: Abstraction has 427 states and 604 transitions. [2020-12-22 07:16:02,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:16:02,323 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 604 transitions. [2020-12-22 07:16:02,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 07:16:02,323 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:02,324 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:02,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 07:16:02,324 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:02,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:02,325 INFO L82 PathProgramCache]: Analyzing trace with hash -621480091, now seen corresponding path program 1 times [2020-12-22 07:16:02,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:02,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070723570] [2020-12-22 07:16:02,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:02,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:02,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:02,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070723570] [2020-12-22 07:16:02,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:02,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:16:02,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901931774] [2020-12-22 07:16:02,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:16:02,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:02,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:16:02,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:16:02,408 INFO L87 Difference]: Start difference. First operand 427 states and 604 transitions. Second operand 4 states. [2020-12-22 07:16:02,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:02,676 INFO L93 Difference]: Finished difference Result 1011 states and 1444 transitions. [2020-12-22 07:16:02,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:16:02,677 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-12-22 07:16:02,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:02,681 INFO L225 Difference]: With dead ends: 1011 [2020-12-22 07:16:02,681 INFO L226 Difference]: Without dead ends: 703 [2020-12-22 07:16:02,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:16:02,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2020-12-22 07:16:02,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 427. [2020-12-22 07:16:02,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2020-12-22 07:16:02,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 600 transitions. [2020-12-22 07:16:02,707 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 600 transitions. Word has length 57 [2020-12-22 07:16:02,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:02,707 INFO L481 AbstractCegarLoop]: Abstraction has 427 states and 600 transitions. [2020-12-22 07:16:02,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:16:02,707 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 600 transitions. [2020-12-22 07:16:02,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 07:16:02,708 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:02,708 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:02,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 07:16:02,709 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:02,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:02,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1688514268, now seen corresponding path program 1 times [2020-12-22 07:16:02,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:02,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515141066] [2020-12-22 07:16:02,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:02,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:02,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:02,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515141066] [2020-12-22 07:16:02,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:02,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:16:02,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451893974] [2020-12-22 07:16:02,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:16:02,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:02,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:16:02,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:02,774 INFO L87 Difference]: Start difference. First operand 427 states and 600 transitions. Second operand 3 states. [2020-12-22 07:16:02,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:02,818 INFO L93 Difference]: Finished difference Result 859 states and 1231 transitions. [2020-12-22 07:16:02,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:16:02,819 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2020-12-22 07:16:02,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:02,822 INFO L225 Difference]: With dead ends: 859 [2020-12-22 07:16:02,822 INFO L226 Difference]: Without dead ends: 551 [2020-12-22 07:16:02,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:02,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2020-12-22 07:16:02,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 422. [2020-12-22 07:16:02,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2020-12-22 07:16:02,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 592 transitions. [2020-12-22 07:16:02,847 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 592 transitions. Word has length 58 [2020-12-22 07:16:02,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:02,848 INFO L481 AbstractCegarLoop]: Abstraction has 422 states and 592 transitions. [2020-12-22 07:16:02,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:16:02,848 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 592 transitions. [2020-12-22 07:16:02,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 07:16:02,848 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:02,849 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:02,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 07:16:02,849 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:02,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:02,850 INFO L82 PathProgramCache]: Analyzing trace with hash -741802892, now seen corresponding path program 1 times [2020-12-22 07:16:02,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:02,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805419547] [2020-12-22 07:16:02,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:02,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:02,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:02,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805419547] [2020-12-22 07:16:02,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:02,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:16:02,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499100740] [2020-12-22 07:16:02,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:16:02,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:02,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:16:02,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:02,914 INFO L87 Difference]: Start difference. First operand 422 states and 592 transitions. Second operand 3 states. [2020-12-22 07:16:02,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:02,998 INFO L93 Difference]: Finished difference Result 858 states and 1230 transitions. [2020-12-22 07:16:02,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:16:02,999 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2020-12-22 07:16:02,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:03,002 INFO L225 Difference]: With dead ends: 858 [2020-12-22 07:16:03,002 INFO L226 Difference]: Without dead ends: 555 [2020-12-22 07:16:03,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:03,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-12-22 07:16:03,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 402. [2020-12-22 07:16:03,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2020-12-22 07:16:03,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 560 transitions. [2020-12-22 07:16:03,028 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 560 transitions. Word has length 62 [2020-12-22 07:16:03,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:03,029 INFO L481 AbstractCegarLoop]: Abstraction has 402 states and 560 transitions. [2020-12-22 07:16:03,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:16:03,029 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 560 transitions. [2020-12-22 07:16:03,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 07:16:03,030 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:03,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:03,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 07:16:03,030 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:03,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:03,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1449842060, now seen corresponding path program 1 times [2020-12-22 07:16:03,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:03,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142068922] [2020-12-22 07:16:03,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:03,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:03,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:03,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142068922] [2020-12-22 07:16:03,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:03,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:16:03,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297269547] [2020-12-22 07:16:03,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:16:03,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:03,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:16:03,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:03,091 INFO L87 Difference]: Start difference. First operand 402 states and 560 transitions. Second operand 3 states. [2020-12-22 07:16:03,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:03,161 INFO L93 Difference]: Finished difference Result 826 states and 1174 transitions. [2020-12-22 07:16:03,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:16:03,162 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-22 07:16:03,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:03,164 INFO L225 Difference]: With dead ends: 826 [2020-12-22 07:16:03,165 INFO L226 Difference]: Without dead ends: 543 [2020-12-22 07:16:03,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:03,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2020-12-22 07:16:03,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 390. [2020-12-22 07:16:03,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 390 states. [2020-12-22 07:16:03,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 542 transitions. [2020-12-22 07:16:03,208 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 542 transitions. Word has length 66 [2020-12-22 07:16:03,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:03,209 INFO L481 AbstractCegarLoop]: Abstraction has 390 states and 542 transitions. [2020-12-22 07:16:03,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:16:03,209 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 542 transitions. [2020-12-22 07:16:03,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 07:16:03,210 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:03,210 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:03,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 07:16:03,210 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:03,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:03,211 INFO L82 PathProgramCache]: Analyzing trace with hash -2013886397, now seen corresponding path program 1 times [2020-12-22 07:16:03,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:03,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043615832] [2020-12-22 07:16:03,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:03,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:03,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:03,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043615832] [2020-12-22 07:16:03,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:03,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:16:03,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53297622] [2020-12-22 07:16:03,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:16:03,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:03,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:16:03,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:16:03,282 INFO L87 Difference]: Start difference. First operand 390 states and 542 transitions. Second operand 6 states. [2020-12-22 07:16:03,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:03,459 INFO L93 Difference]: Finished difference Result 1436 states and 2033 transitions. [2020-12-22 07:16:03,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 07:16:03,460 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-12-22 07:16:03,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:03,466 INFO L225 Difference]: With dead ends: 1436 [2020-12-22 07:16:03,466 INFO L226 Difference]: Without dead ends: 1165 [2020-12-22 07:16:03,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-22 07:16:03,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2020-12-22 07:16:03,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 411. [2020-12-22 07:16:03,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2020-12-22 07:16:03,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 566 transitions. [2020-12-22 07:16:03,502 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 566 transitions. Word has length 67 [2020-12-22 07:16:03,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:03,502 INFO L481 AbstractCegarLoop]: Abstraction has 411 states and 566 transitions. [2020-12-22 07:16:03,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:16:03,502 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 566 transitions. [2020-12-22 07:16:03,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 07:16:03,503 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:03,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:03,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 07:16:03,504 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:03,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:03,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1216909730, now seen corresponding path program 1 times [2020-12-22 07:16:03,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:03,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054113819] [2020-12-22 07:16:03,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:03,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:03,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054113819] [2020-12-22 07:16:03,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:03,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:16:03,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738251131] [2020-12-22 07:16:03,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:16:03,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:03,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:16:03,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:03,568 INFO L87 Difference]: Start difference. First operand 411 states and 566 transitions. Second operand 3 states. [2020-12-22 07:16:03,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:03,662 INFO L93 Difference]: Finished difference Result 843 states and 1190 transitions. [2020-12-22 07:16:03,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:16:03,662 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-22 07:16:03,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:03,665 INFO L225 Difference]: With dead ends: 843 [2020-12-22 07:16:03,666 INFO L226 Difference]: Without dead ends: 572 [2020-12-22 07:16:03,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:03,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2020-12-22 07:16:03,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 391. [2020-12-22 07:16:03,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-12-22 07:16:03,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 534 transitions. [2020-12-22 07:16:03,696 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 534 transitions. Word has length 69 [2020-12-22 07:16:03,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:03,696 INFO L481 AbstractCegarLoop]: Abstraction has 391 states and 534 transitions. [2020-12-22 07:16:03,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:16:03,697 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 534 transitions. [2020-12-22 07:16:03,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 07:16:03,697 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:03,698 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:03,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 07:16:03,698 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:03,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:03,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1979952454, now seen corresponding path program 1 times [2020-12-22 07:16:03,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:03,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847741798] [2020-12-22 07:16:03,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:03,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:03,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:03,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847741798] [2020-12-22 07:16:03,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:03,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:16:03,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610328421] [2020-12-22 07:16:03,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:16:03,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:03,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:16:03,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:03,774 INFO L87 Difference]: Start difference. First operand 391 states and 534 transitions. Second operand 3 states. [2020-12-22 07:16:03,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:03,863 INFO L93 Difference]: Finished difference Result 811 states and 1134 transitions. [2020-12-22 07:16:03,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:16:03,863 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-22 07:16:03,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:03,867 INFO L225 Difference]: With dead ends: 811 [2020-12-22 07:16:03,867 INFO L226 Difference]: Without dead ends: 560 [2020-12-22 07:16:03,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:03,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2020-12-22 07:16:03,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 379. [2020-12-22 07:16:03,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-12-22 07:16:03,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 516 transitions. [2020-12-22 07:16:03,902 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 516 transitions. Word has length 73 [2020-12-22 07:16:03,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:03,902 INFO L481 AbstractCegarLoop]: Abstraction has 379 states and 516 transitions. [2020-12-22 07:16:03,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:16:03,903 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 516 transitions. [2020-12-22 07:16:03,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 07:16:03,904 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:03,904 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:03,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 07:16:03,904 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:03,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:03,905 INFO L82 PathProgramCache]: Analyzing trace with hash -797041989, now seen corresponding path program 1 times [2020-12-22 07:16:03,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:03,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181098057] [2020-12-22 07:16:03,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:03,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:04,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:04,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181098057] [2020-12-22 07:16:04,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:04,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:16:04,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351665522] [2020-12-22 07:16:04,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:16:04,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:04,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:16:04,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:16:04,064 INFO L87 Difference]: Start difference. First operand 379 states and 516 transitions. Second operand 6 states. [2020-12-22 07:16:04,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:04,289 INFO L93 Difference]: Finished difference Result 1083 states and 1512 transitions. [2020-12-22 07:16:04,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 07:16:04,290 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-12-22 07:16:04,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:04,294 INFO L225 Difference]: With dead ends: 1083 [2020-12-22 07:16:04,294 INFO L226 Difference]: Without dead ends: 844 [2020-12-22 07:16:04,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-22 07:16:04,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2020-12-22 07:16:04,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 404. [2020-12-22 07:16:04,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 404 states. [2020-12-22 07:16:04,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 551 transitions. [2020-12-22 07:16:04,335 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 551 transitions. Word has length 76 [2020-12-22 07:16:04,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:04,335 INFO L481 AbstractCegarLoop]: Abstraction has 404 states and 551 transitions. [2020-12-22 07:16:04,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:16:04,335 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 551 transitions. [2020-12-22 07:16:04,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 07:16:04,336 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:04,336 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:04,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 07:16:04,337 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:04,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:04,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1479160478, now seen corresponding path program 1 times [2020-12-22 07:16:04,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:04,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124144978] [2020-12-22 07:16:04,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:04,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:04,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:04,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124144978] [2020-12-22 07:16:04,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:04,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 07:16:04,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086763137] [2020-12-22 07:16:04,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:16:04,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:04,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:16:04,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:16:04,505 INFO L87 Difference]: Start difference. First operand 404 states and 551 transitions. Second operand 7 states. [2020-12-22 07:16:05,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:05,029 INFO L93 Difference]: Finished difference Result 1408 states and 1955 transitions. [2020-12-22 07:16:05,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:16:05,030 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 76 [2020-12-22 07:16:05,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:05,037 INFO L225 Difference]: With dead ends: 1408 [2020-12-22 07:16:05,037 INFO L226 Difference]: Without dead ends: 1151 [2020-12-22 07:16:05,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 07:16:05,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2020-12-22 07:16:05,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 432. [2020-12-22 07:16:05,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2020-12-22 07:16:05,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 582 transitions. [2020-12-22 07:16:05,105 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 582 transitions. Word has length 76 [2020-12-22 07:16:05,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:05,106 INFO L481 AbstractCegarLoop]: Abstraction has 432 states and 582 transitions. [2020-12-22 07:16:05,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 07:16:05,106 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 582 transitions. [2020-12-22 07:16:05,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 07:16:05,107 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:05,107 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:05,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 07:16:05,107 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:05,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:05,108 INFO L82 PathProgramCache]: Analyzing trace with hash 532768487, now seen corresponding path program 1 times [2020-12-22 07:16:05,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:05,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404335860] [2020-12-22 07:16:05,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:05,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:05,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404335860] [2020-12-22 07:16:05,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:05,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:16:05,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722711738] [2020-12-22 07:16:05,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:16:05,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:05,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:16:05,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:16:05,187 INFO L87 Difference]: Start difference. First operand 432 states and 582 transitions. Second operand 4 states. [2020-12-22 07:16:05,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:05,367 INFO L93 Difference]: Finished difference Result 1115 states and 1519 transitions. [2020-12-22 07:16:05,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:16:05,368 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-12-22 07:16:05,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:05,373 INFO L225 Difference]: With dead ends: 1115 [2020-12-22 07:16:05,373 INFO L226 Difference]: Without dead ends: 852 [2020-12-22 07:16:05,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:16:05,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2020-12-22 07:16:05,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 653. [2020-12-22 07:16:05,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 653 states. [2020-12-22 07:16:05,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 870 transitions. [2020-12-22 07:16:05,440 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 870 transitions. Word has length 76 [2020-12-22 07:16:05,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:05,441 INFO L481 AbstractCegarLoop]: Abstraction has 653 states and 870 transitions. [2020-12-22 07:16:05,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:16:05,441 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 870 transitions. [2020-12-22 07:16:05,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 07:16:05,442 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:05,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:05,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 07:16:05,443 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:05,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:05,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1675634663, now seen corresponding path program 1 times [2020-12-22 07:16:05,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:05,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283937005] [2020-12-22 07:16:05,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:05,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:05,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:05,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283937005] [2020-12-22 07:16:05,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:05,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:16:05,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122564638] [2020-12-22 07:16:05,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:16:05,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:05,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:16:05,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:05,513 INFO L87 Difference]: Start difference. First operand 653 states and 870 transitions. Second operand 3 states. [2020-12-22 07:16:05,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:05,636 INFO L93 Difference]: Finished difference Result 1138 states and 1550 transitions. [2020-12-22 07:16:05,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:16:05,636 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 07:16:05,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:05,641 INFO L225 Difference]: With dead ends: 1138 [2020-12-22 07:16:05,641 INFO L226 Difference]: Without dead ends: 760 [2020-12-22 07:16:05,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:05,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2020-12-22 07:16:05,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 649. [2020-12-22 07:16:05,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-12-22 07:16:05,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 863 transitions. [2020-12-22 07:16:05,707 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 863 transitions. Word has length 77 [2020-12-22 07:16:05,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:05,707 INFO L481 AbstractCegarLoop]: Abstraction has 649 states and 863 transitions. [2020-12-22 07:16:05,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:16:05,707 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 863 transitions. [2020-12-22 07:16:05,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 07:16:05,709 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:05,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:05,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 07:16:05,710 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:05,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:05,710 INFO L82 PathProgramCache]: Analyzing trace with hash -43406846, now seen corresponding path program 1 times [2020-12-22 07:16:05,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:05,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064429959] [2020-12-22 07:16:05,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:05,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:05,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:05,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064429959] [2020-12-22 07:16:05,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:05,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:16:05,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123950018] [2020-12-22 07:16:05,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:16:05,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:05,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:16:05,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:16:05,771 INFO L87 Difference]: Start difference. First operand 649 states and 863 transitions. Second operand 4 states. [2020-12-22 07:16:05,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:05,965 INFO L93 Difference]: Finished difference Result 1453 states and 1955 transitions. [2020-12-22 07:16:05,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:16:05,965 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-12-22 07:16:05,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:05,970 INFO L225 Difference]: With dead ends: 1453 [2020-12-22 07:16:05,971 INFO L226 Difference]: Without dead ends: 1065 [2020-12-22 07:16:05,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:16:05,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2020-12-22 07:16:06,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 868. [2020-12-22 07:16:06,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 868 states. [2020-12-22 07:16:06,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1145 transitions. [2020-12-22 07:16:06,054 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1145 transitions. Word has length 78 [2020-12-22 07:16:06,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:06,055 INFO L481 AbstractCegarLoop]: Abstraction has 868 states and 1145 transitions. [2020-12-22 07:16:06,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:16:06,055 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1145 transitions. [2020-12-22 07:16:06,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 07:16:06,056 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:06,057 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:06,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 07:16:06,057 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:06,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:06,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1923184217, now seen corresponding path program 1 times [2020-12-22 07:16:06,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:06,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87011559] [2020-12-22 07:16:06,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:06,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:06,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:06,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87011559] [2020-12-22 07:16:06,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:06,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:16:06,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378372013] [2020-12-22 07:16:06,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:16:06,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:06,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:16:06,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:06,095 INFO L87 Difference]: Start difference. First operand 868 states and 1145 transitions. Second operand 3 states. [2020-12-22 07:16:06,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:06,365 INFO L93 Difference]: Finished difference Result 2026 states and 2690 transitions. [2020-12-22 07:16:06,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:16:06,366 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-12-22 07:16:06,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:06,376 INFO L225 Difference]: With dead ends: 2026 [2020-12-22 07:16:06,376 INFO L226 Difference]: Without dead ends: 1417 [2020-12-22 07:16:06,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:06,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1417 states. [2020-12-22 07:16:06,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1417 to 870. [2020-12-22 07:16:06,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 870 states. [2020-12-22 07:16:06,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1147 transitions. [2020-12-22 07:16:06,503 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1147 transitions. Word has length 78 [2020-12-22 07:16:06,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:06,503 INFO L481 AbstractCegarLoop]: Abstraction has 870 states and 1147 transitions. [2020-12-22 07:16:06,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:16:06,504 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1147 transitions. [2020-12-22 07:16:06,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 07:16:06,505 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:06,505 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:06,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 07:16:06,506 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:06,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:06,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1579042436, now seen corresponding path program 1 times [2020-12-22 07:16:06,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:06,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040876205] [2020-12-22 07:16:06,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:06,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:06,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:06,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040876205] [2020-12-22 07:16:06,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:06,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:16:06,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313806230] [2020-12-22 07:16:06,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:16:06,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:06,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:16:06,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:16:06,662 INFO L87 Difference]: Start difference. First operand 870 states and 1147 transitions. Second operand 6 states. [2020-12-22 07:16:07,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:07,438 INFO L93 Difference]: Finished difference Result 3233 states and 4332 transitions. [2020-12-22 07:16:07,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:16:07,439 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-12-22 07:16:07,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:07,451 INFO L225 Difference]: With dead ends: 3233 [2020-12-22 07:16:07,451 INFO L226 Difference]: Without dead ends: 2713 [2020-12-22 07:16:07,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 07:16:07,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2713 states. [2020-12-22 07:16:07,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2713 to 996. [2020-12-22 07:16:07,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 996 states. [2020-12-22 07:16:07,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1294 transitions. [2020-12-22 07:16:07,576 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1294 transitions. Word has length 78 [2020-12-22 07:16:07,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:07,576 INFO L481 AbstractCegarLoop]: Abstraction has 996 states and 1294 transitions. [2020-12-22 07:16:07,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:16:07,577 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1294 transitions. [2020-12-22 07:16:07,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 07:16:07,578 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:07,579 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:07,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 07:16:07,579 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:07,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:07,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1296090681, now seen corresponding path program 1 times [2020-12-22 07:16:07,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:07,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039047099] [2020-12-22 07:16:07,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:07,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:07,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:07,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039047099] [2020-12-22 07:16:07,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:07,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:16:07,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104700154] [2020-12-22 07:16:07,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:16:07,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:07,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:16:07,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:16:07,642 INFO L87 Difference]: Start difference. First operand 996 states and 1294 transitions. Second operand 4 states. [2020-12-22 07:16:07,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:07,932 INFO L93 Difference]: Finished difference Result 2394 states and 3157 transitions. [2020-12-22 07:16:07,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:16:07,934 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2020-12-22 07:16:07,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:07,943 INFO L225 Difference]: With dead ends: 2394 [2020-12-22 07:16:07,943 INFO L226 Difference]: Without dead ends: 1826 [2020-12-22 07:16:07,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:16:07,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1826 states. [2020-12-22 07:16:08,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1826 to 1351. [2020-12-22 07:16:08,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1351 states. [2020-12-22 07:16:08,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1351 states to 1351 states and 1751 transitions. [2020-12-22 07:16:08,089 INFO L78 Accepts]: Start accepts. Automaton has 1351 states and 1751 transitions. Word has length 79 [2020-12-22 07:16:08,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:08,090 INFO L481 AbstractCegarLoop]: Abstraction has 1351 states and 1751 transitions. [2020-12-22 07:16:08,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:16:08,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1351 states and 1751 transitions. [2020-12-22 07:16:08,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 07:16:08,092 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:08,092 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:08,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 07:16:08,092 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:08,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:08,093 INFO L82 PathProgramCache]: Analyzing trace with hash -127959653, now seen corresponding path program 1 times [2020-12-22 07:16:08,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:08,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593665589] [2020-12-22 07:16:08,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:08,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:08,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:08,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593665589] [2020-12-22 07:16:08,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:08,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:16:08,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100685834] [2020-12-22 07:16:08,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:16:08,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:08,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:16:08,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:16:08,170 INFO L87 Difference]: Start difference. First operand 1351 states and 1751 transitions. Second operand 4 states. [2020-12-22 07:16:08,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:08,377 INFO L93 Difference]: Finished difference Result 2691 states and 3515 transitions. [2020-12-22 07:16:08,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:16:08,377 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-12-22 07:16:08,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:08,384 INFO L225 Difference]: With dead ends: 2691 [2020-12-22 07:16:08,384 INFO L226 Difference]: Without dead ends: 1416 [2020-12-22 07:16:08,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:16:08,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2020-12-22 07:16:08,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1055. [2020-12-22 07:16:08,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1055 states. [2020-12-22 07:16:08,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1382 transitions. [2020-12-22 07:16:08,519 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1382 transitions. Word has length 80 [2020-12-22 07:16:08,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:08,520 INFO L481 AbstractCegarLoop]: Abstraction has 1055 states and 1382 transitions. [2020-12-22 07:16:08,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:16:08,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1382 transitions. [2020-12-22 07:16:08,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 07:16:08,521 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:08,521 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:08,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 07:16:08,522 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:08,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:08,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1884673237, now seen corresponding path program 1 times [2020-12-22 07:16:08,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:08,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370373772] [2020-12-22 07:16:08,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:08,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:08,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370373772] [2020-12-22 07:16:08,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:08,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:16:08,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416941900] [2020-12-22 07:16:08,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:16:08,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:08,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:16:08,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:16:08,679 INFO L87 Difference]: Start difference. First operand 1055 states and 1382 transitions. Second operand 6 states. [2020-12-22 07:16:09,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:09,152 INFO L93 Difference]: Finished difference Result 2881 states and 3895 transitions. [2020-12-22 07:16:09,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 07:16:09,153 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2020-12-22 07:16:09,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:09,163 INFO L225 Difference]: With dead ends: 2881 [2020-12-22 07:16:09,163 INFO L226 Difference]: Without dead ends: 2073 [2020-12-22 07:16:09,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-22 07:16:09,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2020-12-22 07:16:09,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 1055. [2020-12-22 07:16:09,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1055 states. [2020-12-22 07:16:09,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1377 transitions. [2020-12-22 07:16:09,316 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1377 transitions. Word has length 81 [2020-12-22 07:16:09,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:09,316 INFO L481 AbstractCegarLoop]: Abstraction has 1055 states and 1377 transitions. [2020-12-22 07:16:09,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:16:09,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1377 transitions. [2020-12-22 07:16:09,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 07:16:09,318 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:09,318 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:09,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 07:16:09,318 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:09,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:09,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1245633243, now seen corresponding path program 1 times [2020-12-22 07:16:09,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:09,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929087051] [2020-12-22 07:16:09,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:09,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:09,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:09,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929087051] [2020-12-22 07:16:09,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:09,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:16:09,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445812980] [2020-12-22 07:16:09,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:16:09,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:09,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:16:09,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:09,388 INFO L87 Difference]: Start difference. First operand 1055 states and 1377 transitions. Second operand 3 states. [2020-12-22 07:16:09,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:09,708 INFO L93 Difference]: Finished difference Result 2489 states and 3269 transitions. [2020-12-22 07:16:09,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:16:09,709 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-12-22 07:16:09,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:09,717 INFO L225 Difference]: With dead ends: 2489 [2020-12-22 07:16:09,717 INFO L226 Difference]: Without dead ends: 1584 [2020-12-22 07:16:09,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:09,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2020-12-22 07:16:09,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1061. [2020-12-22 07:16:09,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1061 states. [2020-12-22 07:16:09,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1383 transitions. [2020-12-22 07:16:09,864 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1383 transitions. Word has length 82 [2020-12-22 07:16:09,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:09,864 INFO L481 AbstractCegarLoop]: Abstraction has 1061 states and 1383 transitions. [2020-12-22 07:16:09,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:16:09,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1383 transitions. [2020-12-22 07:16:09,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 07:16:09,865 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:09,866 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:09,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 07:16:09,866 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:09,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:09,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1936137551, now seen corresponding path program 1 times [2020-12-22 07:16:09,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:09,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696575902] [2020-12-22 07:16:09,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:09,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:09,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:09,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696575902] [2020-12-22 07:16:09,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:09,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:16:09,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508070070] [2020-12-22 07:16:09,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:16:09,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:09,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:16:09,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:16:09,945 INFO L87 Difference]: Start difference. First operand 1061 states and 1383 transitions. Second operand 4 states. [2020-12-22 07:16:10,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:10,226 INFO L93 Difference]: Finished difference Result 2433 states and 3189 transitions. [2020-12-22 07:16:10,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:16:10,227 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2020-12-22 07:16:10,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:10,234 INFO L225 Difference]: With dead ends: 2433 [2020-12-22 07:16:10,235 INFO L226 Difference]: Without dead ends: 1472 [2020-12-22 07:16:10,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:16:10,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2020-12-22 07:16:10,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1001. [2020-12-22 07:16:10,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1001 states. [2020-12-22 07:16:10,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1301 transitions. [2020-12-22 07:16:10,394 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1301 transitions. Word has length 82 [2020-12-22 07:16:10,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:10,395 INFO L481 AbstractCegarLoop]: Abstraction has 1001 states and 1301 transitions. [2020-12-22 07:16:10,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:16:10,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1301 transitions. [2020-12-22 07:16:10,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 07:16:10,396 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:10,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:10,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 07:16:10,396 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:10,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:10,397 INFO L82 PathProgramCache]: Analyzing trace with hash 916931346, now seen corresponding path program 1 times [2020-12-22 07:16:10,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:10,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581877551] [2020-12-22 07:16:10,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:10,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:10,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:10,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581877551] [2020-12-22 07:16:10,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:10,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:16:10,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231371148] [2020-12-22 07:16:10,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:16:10,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:10,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:16:10,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:16:10,531 INFO L87 Difference]: Start difference. First operand 1001 states and 1301 transitions. Second operand 6 states. [2020-12-22 07:16:11,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:11,083 INFO L93 Difference]: Finished difference Result 3294 states and 4477 transitions. [2020-12-22 07:16:11,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 07:16:11,084 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 84 [2020-12-22 07:16:11,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:11,095 INFO L225 Difference]: With dead ends: 3294 [2020-12-22 07:16:11,095 INFO L226 Difference]: Without dead ends: 2492 [2020-12-22 07:16:11,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-22 07:16:11,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2492 states. [2020-12-22 07:16:11,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2492 to 989. [2020-12-22 07:16:11,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 989 states. [2020-12-22 07:16:11,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1289 transitions. [2020-12-22 07:16:11,240 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1289 transitions. Word has length 84 [2020-12-22 07:16:11,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:11,241 INFO L481 AbstractCegarLoop]: Abstraction has 989 states and 1289 transitions. [2020-12-22 07:16:11,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:16:11,241 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1289 transitions. [2020-12-22 07:16:11,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 07:16:11,242 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:11,242 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:11,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 07:16:11,243 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:11,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:11,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1263730727, now seen corresponding path program 1 times [2020-12-22 07:16:11,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:11,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050622060] [2020-12-22 07:16:11,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:11,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:11,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:11,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050622060] [2020-12-22 07:16:11,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:11,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:16:11,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334940928] [2020-12-22 07:16:11,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:16:11,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:11,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:16:11,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:16:11,331 INFO L87 Difference]: Start difference. First operand 989 states and 1289 transitions. Second operand 6 states. [2020-12-22 07:16:11,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:11,664 INFO L93 Difference]: Finished difference Result 1777 states and 2354 transitions. [2020-12-22 07:16:11,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 07:16:11,664 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 84 [2020-12-22 07:16:11,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:11,672 INFO L225 Difference]: With dead ends: 1777 [2020-12-22 07:16:11,672 INFO L226 Difference]: Without dead ends: 1775 [2020-12-22 07:16:11,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-12-22 07:16:11,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1775 states. [2020-12-22 07:16:11,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1775 to 991. [2020-12-22 07:16:11,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 991 states. [2020-12-22 07:16:11,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1291 transitions. [2020-12-22 07:16:11,857 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1291 transitions. Word has length 84 [2020-12-22 07:16:11,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:11,858 INFO L481 AbstractCegarLoop]: Abstraction has 991 states and 1291 transitions. [2020-12-22 07:16:11,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:16:11,858 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1291 transitions. [2020-12-22 07:16:11,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 07:16:11,859 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:11,859 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:11,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 07:16:11,859 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:11,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:11,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1741086502, now seen corresponding path program 1 times [2020-12-22 07:16:11,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:11,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764856743] [2020-12-22 07:16:11,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:11,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:11,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764856743] [2020-12-22 07:16:11,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:11,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:16:11,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937705169] [2020-12-22 07:16:11,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:16:11,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:11,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:16:11,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:16:11,944 INFO L87 Difference]: Start difference. First operand 991 states and 1291 transitions. Second operand 6 states. [2020-12-22 07:16:12,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:12,303 INFO L93 Difference]: Finished difference Result 2376 states and 3244 transitions. [2020-12-22 07:16:12,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:16:12,304 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-12-22 07:16:12,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:12,310 INFO L225 Difference]: With dead ends: 2376 [2020-12-22 07:16:12,310 INFO L226 Difference]: Without dead ends: 1572 [2020-12-22 07:16:12,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-12-22 07:16:12,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2020-12-22 07:16:12,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 997. [2020-12-22 07:16:12,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-12-22 07:16:12,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1297 transitions. [2020-12-22 07:16:12,462 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1297 transitions. Word has length 85 [2020-12-22 07:16:12,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:12,463 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1297 transitions. [2020-12-22 07:16:12,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:16:12,463 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1297 transitions. [2020-12-22 07:16:12,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-12-22 07:16:12,466 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:12,466 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:12,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 07:16:12,467 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:12,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:12,467 INFO L82 PathProgramCache]: Analyzing trace with hash 53692854, now seen corresponding path program 1 times [2020-12-22 07:16:12,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:12,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447804513] [2020-12-22 07:16:12,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:12,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:12,703 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:12,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447804513] [2020-12-22 07:16:12,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111248320] [2020-12-22 07:16:12,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:16:12,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:12,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 741 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 07:16:12,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:16:13,255 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 07:16:13,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 07:16:13,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2020-12-22 07:16:13,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303462708] [2020-12-22 07:16:13,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:16:13,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:13,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:16:13,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-12-22 07:16:13,257 INFO L87 Difference]: Start difference. First operand 997 states and 1297 transitions. Second operand 6 states. [2020-12-22 07:16:13,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:13,767 INFO L93 Difference]: Finished difference Result 2581 states and 3495 transitions. [2020-12-22 07:16:13,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:16:13,769 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2020-12-22 07:16:13,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:13,781 INFO L225 Difference]: With dead ends: 2581 [2020-12-22 07:16:13,782 INFO L226 Difference]: Without dead ends: 1771 [2020-12-22 07:16:13,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2020-12-22 07:16:13,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1771 states. [2020-12-22 07:16:13,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1771 to 997. [2020-12-22 07:16:13,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-12-22 07:16:13,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1296 transitions. [2020-12-22 07:16:13,986 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1296 transitions. Word has length 135 [2020-12-22 07:16:13,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:13,986 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1296 transitions. [2020-12-22 07:16:13,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:16:13,986 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1296 transitions. [2020-12-22 07:16:13,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-22 07:16:13,990 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:13,990 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:14,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:16:14,205 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:14,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:14,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1818112463, now seen corresponding path program 1 times [2020-12-22 07:16:14,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:14,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614404580] [2020-12-22 07:16:14,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:14,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:14,438 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:14,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614404580] [2020-12-22 07:16:14,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694335944] [2020-12-22 07:16:14,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:16:14,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:14,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 755 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 07:16:14,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:16:14,933 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:14,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:16:14,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-12-22 07:16:14,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534012157] [2020-12-22 07:16:14,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 07:16:14,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:14,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 07:16:14,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-12-22 07:16:14,936 INFO L87 Difference]: Start difference. First operand 997 states and 1296 transitions. Second operand 13 states. [2020-12-22 07:16:28,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:28,483 INFO L93 Difference]: Finished difference Result 16639 states and 22191 transitions. [2020-12-22 07:16:28,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 242 states. [2020-12-22 07:16:28,483 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 139 [2020-12-22 07:16:28,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:28,516 INFO L225 Difference]: With dead ends: 16639 [2020-12-22 07:16:28,516 INFO L226 Difference]: Without dead ends: 15835 [2020-12-22 07:16:28,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29009 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=8289, Invalid=55467, Unknown=0, NotChecked=0, Total=63756 [2020-12-22 07:16:28,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15835 states. [2020-12-22 07:16:29,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15835 to 2706. [2020-12-22 07:16:29,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2706 states. [2020-12-22 07:16:29,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2706 states to 2706 states and 3525 transitions. [2020-12-22 07:16:29,175 INFO L78 Accepts]: Start accepts. Automaton has 2706 states and 3525 transitions. Word has length 139 [2020-12-22 07:16:29,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:29,175 INFO L481 AbstractCegarLoop]: Abstraction has 2706 states and 3525 transitions. [2020-12-22 07:16:29,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 07:16:29,176 INFO L276 IsEmpty]: Start isEmpty. Operand 2706 states and 3525 transitions. [2020-12-22 07:16:29,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-12-22 07:16:29,182 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:29,183 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:29,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:16:29,399 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:29,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:29,400 INFO L82 PathProgramCache]: Analyzing trace with hash -202174165, now seen corresponding path program 1 times [2020-12-22 07:16:29,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:29,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279488736] [2020-12-22 07:16:29,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:29,727 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:29,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279488736] [2020-12-22 07:16:29,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75526257] [2020-12-22 07:16:29,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:16:29,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:29,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 807 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-22 07:16:29,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:16:30,133 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 07:16:30,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 07:16:30,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 9 [2020-12-22 07:16:30,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039254097] [2020-12-22 07:16:30,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:16:30,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:30,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:16:30,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:16:30,135 INFO L87 Difference]: Start difference. First operand 2706 states and 3525 transitions. Second operand 6 states. [2020-12-22 07:16:31,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:31,267 INFO L93 Difference]: Finished difference Result 7240 states and 9818 transitions. [2020-12-22 07:16:31,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 07:16:31,268 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2020-12-22 07:16:31,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:31,278 INFO L225 Difference]: With dead ends: 7240 [2020-12-22 07:16:31,278 INFO L226 Difference]: Without dead ends: 4761 [2020-12-22 07:16:31,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 142 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-12-22 07:16:31,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4761 states. [2020-12-22 07:16:31,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4761 to 2363. [2020-12-22 07:16:31,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2363 states. [2020-12-22 07:16:31,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2363 states to 2363 states and 3084 transitions. [2020-12-22 07:16:31,742 INFO L78 Accepts]: Start accepts. Automaton has 2363 states and 3084 transitions. Word has length 140 [2020-12-22 07:16:31,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:31,742 INFO L481 AbstractCegarLoop]: Abstraction has 2363 states and 3084 transitions. [2020-12-22 07:16:31,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:16:31,742 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states and 3084 transitions. [2020-12-22 07:16:31,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-12-22 07:16:31,748 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:31,749 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:31,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:16:31,965 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:31,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:31,965 INFO L82 PathProgramCache]: Analyzing trace with hash 328556361, now seen corresponding path program 1 times [2020-12-22 07:16:31,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:31,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603529463] [2020-12-22 07:16:31,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:32,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:32,111 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-22 07:16:32,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603529463] [2020-12-22 07:16:32,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:32,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 07:16:32,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390213769] [2020-12-22 07:16:32,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:16:32,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:32,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:16:32,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:16:32,114 INFO L87 Difference]: Start difference. First operand 2363 states and 3084 transitions. Second operand 7 states. [2020-12-22 07:16:34,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:34,569 INFO L93 Difference]: Finished difference Result 13973 states and 18760 transitions. [2020-12-22 07:16:34,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 07:16:34,570 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 141 [2020-12-22 07:16:34,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:34,590 INFO L225 Difference]: With dead ends: 13973 [2020-12-22 07:16:34,590 INFO L226 Difference]: Without dead ends: 11877 [2020-12-22 07:16:34,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2020-12-22 07:16:34,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11877 states. [2020-12-22 07:16:35,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11877 to 2819. [2020-12-22 07:16:35,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2819 states. [2020-12-22 07:16:35,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2819 states to 2819 states and 3614 transitions. [2020-12-22 07:16:35,252 INFO L78 Accepts]: Start accepts. Automaton has 2819 states and 3614 transitions. Word has length 141 [2020-12-22 07:16:35,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:35,252 INFO L481 AbstractCegarLoop]: Abstraction has 2819 states and 3614 transitions. [2020-12-22 07:16:35,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 07:16:35,253 INFO L276 IsEmpty]: Start isEmpty. Operand 2819 states and 3614 transitions. [2020-12-22 07:16:35,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-22 07:16:35,259 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:35,259 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:35,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-22 07:16:35,260 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:35,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:35,260 INFO L82 PathProgramCache]: Analyzing trace with hash 76678734, now seen corresponding path program 1 times [2020-12-22 07:16:35,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:35,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701176413] [2020-12-22 07:16:35,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:35,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:35,458 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:35,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701176413] [2020-12-22 07:16:35,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657264607] [2020-12-22 07:16:35,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:16:35,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:35,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 07:16:35,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:16:35,873 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-12-22 07:16:35,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:16:35,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 11 [2020-12-22 07:16:35,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419586480] [2020-12-22 07:16:35,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 07:16:35,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:35,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 07:16:35,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-12-22 07:16:35,876 INFO L87 Difference]: Start difference. First operand 2819 states and 3614 transitions. Second operand 11 states. [2020-12-22 07:16:38,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:38,618 INFO L93 Difference]: Finished difference Result 8026 states and 10464 transitions. [2020-12-22 07:16:38,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-12-22 07:16:38,619 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 143 [2020-12-22 07:16:38,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:38,626 INFO L225 Difference]: With dead ends: 8026 [2020-12-22 07:16:38,626 INFO L226 Difference]: Without dead ends: 5271 [2020-12-22 07:16:38,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=525, Invalid=1545, Unknown=0, NotChecked=0, Total=2070 [2020-12-22 07:16:38,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5271 states. [2020-12-22 07:16:39,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5271 to 2343. [2020-12-22 07:16:39,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2343 states. [2020-12-22 07:16:39,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2343 states to 2343 states and 3006 transitions. [2020-12-22 07:16:39,073 INFO L78 Accepts]: Start accepts. Automaton has 2343 states and 3006 transitions. Word has length 143 [2020-12-22 07:16:39,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:39,073 INFO L481 AbstractCegarLoop]: Abstraction has 2343 states and 3006 transitions. [2020-12-22 07:16:39,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 07:16:39,074 INFO L276 IsEmpty]: Start isEmpty. Operand 2343 states and 3006 transitions. [2020-12-22 07:16:39,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-22 07:16:39,079 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:39,079 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:39,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:16:39,294 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:39,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:39,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1720993890, now seen corresponding path program 1 times [2020-12-22 07:16:39,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:39,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139653228] [2020-12-22 07:16:39,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:39,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:39,584 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:39,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139653228] [2020-12-22 07:16:39,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372828026] [2020-12-22 07:16:39,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:16:39,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:39,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-22 07:16:39,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:16:39,870 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 07:16:40,202 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:40,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:16:40,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 17 [2020-12-22 07:16:40,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693196561] [2020-12-22 07:16:40,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-22 07:16:40,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:40,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-22 07:16:40,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2020-12-22 07:16:40,204 INFO L87 Difference]: Start difference. First operand 2343 states and 3006 transitions. Second operand 18 states. [2020-12-22 07:16:42,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:42,594 INFO L93 Difference]: Finished difference Result 6458 states and 8318 transitions. [2020-12-22 07:16:42,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 07:16:42,595 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 143 [2020-12-22 07:16:42,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:42,602 INFO L225 Difference]: With dead ends: 6458 [2020-12-22 07:16:42,603 INFO L226 Difference]: Without dead ends: 4330 [2020-12-22 07:16:42,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=309, Invalid=1173, Unknown=0, NotChecked=0, Total=1482 [2020-12-22 07:16:42,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4330 states. [2020-12-22 07:16:43,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4330 to 2601. [2020-12-22 07:16:43,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2601 states. [2020-12-22 07:16:43,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2601 states to 2601 states and 3330 transitions. [2020-12-22 07:16:43,096 INFO L78 Accepts]: Start accepts. Automaton has 2601 states and 3330 transitions. Word has length 143 [2020-12-22 07:16:43,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:43,096 INFO L481 AbstractCegarLoop]: Abstraction has 2601 states and 3330 transitions. [2020-12-22 07:16:43,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-22 07:16:43,096 INFO L276 IsEmpty]: Start isEmpty. Operand 2601 states and 3330 transitions. [2020-12-22 07:16:43,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-22 07:16:43,102 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:43,102 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:43,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-12-22 07:16:43,318 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:43,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:43,320 INFO L82 PathProgramCache]: Analyzing trace with hash 442622684, now seen corresponding path program 1 times [2020-12-22 07:16:43,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:43,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241544877] [2020-12-22 07:16:43,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:43,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:43,454 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-12-22 07:16:43,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241544877] [2020-12-22 07:16:43,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:43,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:16:43,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493635298] [2020-12-22 07:16:43,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:16:43,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:43,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:16:43,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:16:43,457 INFO L87 Difference]: Start difference. First operand 2601 states and 3330 transitions. Second operand 5 states. [2020-12-22 07:16:44,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:44,063 INFO L93 Difference]: Finished difference Result 4908 states and 6331 transitions. [2020-12-22 07:16:44,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:16:44,064 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-12-22 07:16:44,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:44,069 INFO L225 Difference]: With dead ends: 4908 [2020-12-22 07:16:44,069 INFO L226 Difference]: Without dead ends: 2461 [2020-12-22 07:16:44,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:16:44,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2461 states. [2020-12-22 07:16:44,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2461 to 2461. [2020-12-22 07:16:44,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2461 states. [2020-12-22 07:16:44,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2461 states to 2461 states and 3153 transitions. [2020-12-22 07:16:44,445 INFO L78 Accepts]: Start accepts. Automaton has 2461 states and 3153 transitions. Word has length 143 [2020-12-22 07:16:44,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:44,445 INFO L481 AbstractCegarLoop]: Abstraction has 2461 states and 3153 transitions. [2020-12-22 07:16:44,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:16:44,445 INFO L276 IsEmpty]: Start isEmpty. Operand 2461 states and 3153 transitions. [2020-12-22 07:16:44,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-12-22 07:16:44,449 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:44,450 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:44,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-12-22 07:16:44,450 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:44,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:44,450 INFO L82 PathProgramCache]: Analyzing trace with hash 296470726, now seen corresponding path program 1 times [2020-12-22 07:16:44,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:44,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984081160] [2020-12-22 07:16:44,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:44,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:44,696 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 31 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:44,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984081160] [2020-12-22 07:16:44,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014652947] [2020-12-22 07:16:44,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:16:44,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:44,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-22 07:16:44,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:16:44,988 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 07:16:45,004 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 07:16:45,421 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 31 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:45,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:16:45,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 17 [2020-12-22 07:16:45,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516567013] [2020-12-22 07:16:45,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-22 07:16:45,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:45,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-22 07:16:45,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2020-12-22 07:16:45,423 INFO L87 Difference]: Start difference. First operand 2461 states and 3153 transitions. Second operand 18 states. [2020-12-22 07:16:48,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:48,660 INFO L93 Difference]: Finished difference Result 6722 states and 8630 transitions. [2020-12-22 07:16:48,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-12-22 07:16:48,661 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 144 [2020-12-22 07:16:48,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:48,667 INFO L225 Difference]: With dead ends: 6722 [2020-12-22 07:16:48,668 INFO L226 Difference]: Without dead ends: 4476 [2020-12-22 07:16:48,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 135 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=401, Invalid=1579, Unknown=0, NotChecked=0, Total=1980 [2020-12-22 07:16:48,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4476 states. [2020-12-22 07:16:49,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4476 to 2740. [2020-12-22 07:16:49,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2740 states. [2020-12-22 07:16:49,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2740 states to 2740 states and 3501 transitions. [2020-12-22 07:16:49,107 INFO L78 Accepts]: Start accepts. Automaton has 2740 states and 3501 transitions. Word has length 144 [2020-12-22 07:16:49,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:49,108 INFO L481 AbstractCegarLoop]: Abstraction has 2740 states and 3501 transitions. [2020-12-22 07:16:49,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-22 07:16:49,108 INFO L276 IsEmpty]: Start isEmpty. Operand 2740 states and 3501 transitions. [2020-12-22 07:16:49,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-12-22 07:16:49,112 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:49,112 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:49,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:16:49,326 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:49,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:49,327 INFO L82 PathProgramCache]: Analyzing trace with hash -742113848, now seen corresponding path program 1 times [2020-12-22 07:16:49,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:49,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282004077] [2020-12-22 07:16:49,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:49,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:49,413 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-12-22 07:16:49,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282004077] [2020-12-22 07:16:49,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:49,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:16:49,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98583457] [2020-12-22 07:16:49,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:16:49,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:49,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:16:49,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:16:49,417 INFO L87 Difference]: Start difference. First operand 2740 states and 3501 transitions. Second operand 4 states. [2020-12-22 07:16:49,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:49,868 INFO L93 Difference]: Finished difference Result 5111 states and 6573 transitions. [2020-12-22 07:16:49,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:16:49,869 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2020-12-22 07:16:49,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:49,871 INFO L225 Difference]: With dead ends: 5111 [2020-12-22 07:16:49,871 INFO L226 Difference]: Without dead ends: 2527 [2020-12-22 07:16:49,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:16:49,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2527 states. [2020-12-22 07:16:50,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2527 to 2515. [2020-12-22 07:16:50,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2515 states. [2020-12-22 07:16:50,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2515 states to 2515 states and 3201 transitions. [2020-12-22 07:16:50,269 INFO L78 Accepts]: Start accepts. Automaton has 2515 states and 3201 transitions. Word has length 144 [2020-12-22 07:16:50,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:50,270 INFO L481 AbstractCegarLoop]: Abstraction has 2515 states and 3201 transitions. [2020-12-22 07:16:50,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:16:50,270 INFO L276 IsEmpty]: Start isEmpty. Operand 2515 states and 3201 transitions. [2020-12-22 07:16:50,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-12-22 07:16:50,272 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:50,272 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:50,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-12-22 07:16:50,273 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:50,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:50,273 INFO L82 PathProgramCache]: Analyzing trace with hash -238390573, now seen corresponding path program 1 times [2020-12-22 07:16:50,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:50,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64624625] [2020-12-22 07:16:50,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:50,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:50,490 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:50,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64624625] [2020-12-22 07:16:50,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:50,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 07:16:50,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139881383] [2020-12-22 07:16:50,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 07:16:50,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:50,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 07:16:50,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-22 07:16:50,492 INFO L87 Difference]: Start difference. First operand 2515 states and 3201 transitions. Second operand 10 states. [2020-12-22 07:16:51,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:51,677 INFO L93 Difference]: Finished difference Result 6630 states and 8512 transitions. [2020-12-22 07:16:51,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 07:16:51,677 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 144 [2020-12-22 07:16:51,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:51,681 INFO L225 Difference]: With dead ends: 6630 [2020-12-22 07:16:51,681 INFO L226 Difference]: Without dead ends: 4330 [2020-12-22 07:16:51,684 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2020-12-22 07:16:51,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4330 states. [2020-12-22 07:16:52,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4330 to 2850. [2020-12-22 07:16:52,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2850 states. [2020-12-22 07:16:52,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2850 states to 2850 states and 3624 transitions. [2020-12-22 07:16:52,490 INFO L78 Accepts]: Start accepts. Automaton has 2850 states and 3624 transitions. Word has length 144 [2020-12-22 07:16:52,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:52,490 INFO L481 AbstractCegarLoop]: Abstraction has 2850 states and 3624 transitions. [2020-12-22 07:16:52,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 07:16:52,490 INFO L276 IsEmpty]: Start isEmpty. Operand 2850 states and 3624 transitions. [2020-12-22 07:16:52,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-12-22 07:16:52,493 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:52,493 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:52,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-12-22 07:16:52,494 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:52,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:52,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1520562859, now seen corresponding path program 1 times [2020-12-22 07:16:52,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:52,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263209769] [2020-12-22 07:16:52,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:52,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:52,602 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-12-22 07:16:52,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263209769] [2020-12-22 07:16:52,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:52,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:16:52,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097805900] [2020-12-22 07:16:52,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:16:52,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:52,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:16:52,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:16:52,604 INFO L87 Difference]: Start difference. First operand 2850 states and 3624 transitions. Second operand 5 states. [2020-12-22 07:16:53,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:53,099 INFO L93 Difference]: Finished difference Result 5326 states and 6811 transitions. [2020-12-22 07:16:53,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:16:53,099 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-12-22 07:16:53,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:53,102 INFO L225 Difference]: With dead ends: 5326 [2020-12-22 07:16:53,102 INFO L226 Difference]: Without dead ends: 2633 [2020-12-22 07:16:53,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:16:53,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2633 states. [2020-12-22 07:16:53,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2633 to 2633. [2020-12-22 07:16:53,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2633 states. [2020-12-22 07:16:53,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2633 states to 2633 states and 3351 transitions. [2020-12-22 07:16:53,612 INFO L78 Accepts]: Start accepts. Automaton has 2633 states and 3351 transitions. Word has length 144 [2020-12-22 07:16:53,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:53,612 INFO L481 AbstractCegarLoop]: Abstraction has 2633 states and 3351 transitions. [2020-12-22 07:16:53,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:16:53,612 INFO L276 IsEmpty]: Start isEmpty. Operand 2633 states and 3351 transitions. [2020-12-22 07:16:53,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-12-22 07:16:53,615 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:53,615 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:53,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-12-22 07:16:53,615 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:53,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:53,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1712108579, now seen corresponding path program 1 times [2020-12-22 07:16:53,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:53,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345573289] [2020-12-22 07:16:53,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:53,934 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 13 [2020-12-22 07:16:54,009 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:54,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345573289] [2020-12-22 07:16:54,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567595507] [2020-12-22 07:16:54,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:16:54,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:54,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 812 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 07:16:54,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:16:54,577 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:54,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:16:54,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2020-12-22 07:16:54,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698675414] [2020-12-22 07:16:54,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 07:16:54,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:54,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 07:16:54,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-22 07:16:54,579 INFO L87 Difference]: Start difference. First operand 2633 states and 3351 transitions. Second operand 10 states. [2020-12-22 07:16:55,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:55,991 INFO L93 Difference]: Finished difference Result 7269 states and 9259 transitions. [2020-12-22 07:16:55,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 07:16:55,991 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 145 [2020-12-22 07:16:55,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:55,996 INFO L225 Difference]: With dead ends: 7269 [2020-12-22 07:16:55,996 INFO L226 Difference]: Without dead ends: 4851 [2020-12-22 07:16:55,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 139 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2020-12-22 07:16:56,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4851 states. [2020-12-22 07:16:56,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4851 to 2644. [2020-12-22 07:16:56,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2644 states. [2020-12-22 07:16:56,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2644 states to 2644 states and 3362 transitions. [2020-12-22 07:16:56,485 INFO L78 Accepts]: Start accepts. Automaton has 2644 states and 3362 transitions. Word has length 145 [2020-12-22 07:16:56,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:56,486 INFO L481 AbstractCegarLoop]: Abstraction has 2644 states and 3362 transitions. [2020-12-22 07:16:56,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 07:16:56,486 INFO L276 IsEmpty]: Start isEmpty. Operand 2644 states and 3362 transitions. [2020-12-22 07:16:56,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-12-22 07:16:56,489 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:56,489 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:56,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:16:56,691 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:56,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:56,692 INFO L82 PathProgramCache]: Analyzing trace with hash -911347769, now seen corresponding path program 1 times [2020-12-22 07:16:56,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:56,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888771907] [2020-12-22 07:16:56,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:56,909 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:56,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888771907] [2020-12-22 07:16:56,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448359760] [2020-12-22 07:16:56,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:16:57,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:57,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 847 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 07:16:57,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:16:57,365 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 07:16:57,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 07:16:57,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2020-12-22 07:16:57,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834328870] [2020-12-22 07:16:57,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:16:57,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:57,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:16:57,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-12-22 07:16:57,367 INFO L87 Difference]: Start difference. First operand 2644 states and 3362 transitions. Second operand 6 states. [2020-12-22 07:16:58,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:58,593 INFO L93 Difference]: Finished difference Result 8626 states and 11243 transitions. [2020-12-22 07:16:58,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 07:16:58,594 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2020-12-22 07:16:58,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:58,599 INFO L225 Difference]: With dead ends: 8626 [2020-12-22 07:16:58,599 INFO L226 Difference]: Without dead ends: 6157 [2020-12-22 07:16:58,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-12-22 07:16:58,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6157 states. [2020-12-22 07:16:59,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6157 to 2644. [2020-12-22 07:16:59,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2644 states. [2020-12-22 07:16:59,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2644 states to 2644 states and 3360 transitions. [2020-12-22 07:16:59,052 INFO L78 Accepts]: Start accepts. Automaton has 2644 states and 3360 transitions. Word has length 145 [2020-12-22 07:16:59,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:59,052 INFO L481 AbstractCegarLoop]: Abstraction has 2644 states and 3360 transitions. [2020-12-22 07:16:59,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:16:59,052 INFO L276 IsEmpty]: Start isEmpty. Operand 2644 states and 3360 transitions. [2020-12-22 07:16:59,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-12-22 07:16:59,055 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:59,055 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:59,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-12-22 07:16:59,264 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:59,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:59,265 INFO L82 PathProgramCache]: Analyzing trace with hash -547307946, now seen corresponding path program 1 times [2020-12-22 07:16:59,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:59,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821433254] [2020-12-22 07:16:59,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:59,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:59,433 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:59,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821433254] [2020-12-22 07:16:59,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809610571] [2020-12-22 07:16:59,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:16:59,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:59,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 07:16:59,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:16:59,832 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:59,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:16:59,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 8 [2020-12-22 07:16:59,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562011020] [2020-12-22 07:16:59,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 07:16:59,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:59,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 07:16:59,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:16:59,834 INFO L87 Difference]: Start difference. First operand 2644 states and 3360 transitions. Second operand 8 states. [2020-12-22 07:17:01,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:01,534 INFO L93 Difference]: Finished difference Result 10060 states and 12825 transitions. [2020-12-22 07:17:01,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 07:17:01,534 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 146 [2020-12-22 07:17:01,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:01,545 INFO L225 Difference]: With dead ends: 10060 [2020-12-22 07:17:01,546 INFO L226 Difference]: Without dead ends: 7631 [2020-12-22 07:17:01,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=129, Invalid=423, Unknown=0, NotChecked=0, Total=552 [2020-12-22 07:17:01,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7631 states. [2020-12-22 07:17:02,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7631 to 4003. [2020-12-22 07:17:02,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4003 states. [2020-12-22 07:17:02,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4003 states to 4003 states and 5097 transitions. [2020-12-22 07:17:02,317 INFO L78 Accepts]: Start accepts. Automaton has 4003 states and 5097 transitions. Word has length 146 [2020-12-22 07:17:02,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:02,318 INFO L481 AbstractCegarLoop]: Abstraction has 4003 states and 5097 transitions. [2020-12-22 07:17:02,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 07:17:02,318 INFO L276 IsEmpty]: Start isEmpty. Operand 4003 states and 5097 transitions. [2020-12-22 07:17:02,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-12-22 07:17:02,323 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:02,323 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:17:02,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:17:02,531 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:17:02,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:02,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1585892520, now seen corresponding path program 1 times [2020-12-22 07:17:02,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:02,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476758194] [2020-12-22 07:17:02,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:02,591 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-12-22 07:17:02,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476758194] [2020-12-22 07:17:02,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:17:02,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:17:02,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454988748] [2020-12-22 07:17:02,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:17:02,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:02,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:17:02,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:17:02,593 INFO L87 Difference]: Start difference. First operand 4003 states and 5097 transitions. Second operand 4 states. [2020-12-22 07:17:03,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:03,167 INFO L93 Difference]: Finished difference Result 6987 states and 8976 transitions. [2020-12-22 07:17:03,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:17:03,168 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-12-22 07:17:03,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:03,172 INFO L225 Difference]: With dead ends: 6987 [2020-12-22 07:17:03,172 INFO L226 Difference]: Without dead ends: 3199 [2020-12-22 07:17:03,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:17:03,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3199 states. [2020-12-22 07:17:03,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3199 to 3180. [2020-12-22 07:17:03,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3180 states. [2020-12-22 07:17:03,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3180 states to 3180 states and 4047 transitions. [2020-12-22 07:17:03,677 INFO L78 Accepts]: Start accepts. Automaton has 3180 states and 4047 transitions. Word has length 146 [2020-12-22 07:17:03,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:03,677 INFO L481 AbstractCegarLoop]: Abstraction has 3180 states and 4047 transitions. [2020-12-22 07:17:03,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:17:03,677 INFO L276 IsEmpty]: Start isEmpty. Operand 3180 states and 4047 transitions. [2020-12-22 07:17:03,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 07:17:03,680 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:03,680 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:17:03,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-12-22 07:17:03,681 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:17:03,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:03,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1555711294, now seen corresponding path program 1 times [2020-12-22 07:17:03,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:03,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131685882] [2020-12-22 07:17:03,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:03,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:03,941 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:03,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131685882] [2020-12-22 07:17:03,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939326478] [2020-12-22 07:17:03,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:17:04,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:04,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 07:17:04,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:17:04,410 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:04,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:17:04,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2020-12-22 07:17:04,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6080384] [2020-12-22 07:17:04,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 07:17:04,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:04,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 07:17:04,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-12-22 07:17:04,412 INFO L87 Difference]: Start difference. First operand 3180 states and 4047 transitions. Second operand 15 states. [2020-12-22 07:17:15,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:15,806 INFO L93 Difference]: Finished difference Result 18839 states and 24337 transitions. [2020-12-22 07:17:15,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2020-12-22 07:17:15,807 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 148 [2020-12-22 07:17:15,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:15,820 INFO L225 Difference]: With dead ends: 18839 [2020-12-22 07:17:15,821 INFO L226 Difference]: Without dead ends: 15874 [2020-12-22 07:17:15,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12819 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=4607, Invalid=26899, Unknown=0, NotChecked=0, Total=31506 [2020-12-22 07:17:15,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15874 states. [2020-12-22 07:17:16,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15874 to 3059. [2020-12-22 07:17:16,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3059 states. [2020-12-22 07:17:16,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3059 states to 3059 states and 3838 transitions. [2020-12-22 07:17:16,414 INFO L78 Accepts]: Start accepts. Automaton has 3059 states and 3838 transitions. Word has length 148 [2020-12-22 07:17:16,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:16,414 INFO L481 AbstractCegarLoop]: Abstraction has 3059 states and 3838 transitions. [2020-12-22 07:17:16,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 07:17:16,414 INFO L276 IsEmpty]: Start isEmpty. Operand 3059 states and 3838 transitions. [2020-12-22 07:17:16,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-12-22 07:17:16,416 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:16,417 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:17:16,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:17:16,618 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:17:16,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:16,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1914409723, now seen corresponding path program 1 times [2020-12-22 07:17:16,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:16,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827975948] [2020-12-22 07:17:16,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:16,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:16,791 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 07:17:16,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827975948] [2020-12-22 07:17:16,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:17:16,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:17:16,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674778824] [2020-12-22 07:17:16,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:17:16,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:16,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:17:16,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:17:16,793 INFO L87 Difference]: Start difference. First operand 3059 states and 3838 transitions. Second operand 6 states. [2020-12-22 07:17:18,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:18,688 INFO L93 Difference]: Finished difference Result 10329 states and 13281 transitions. [2020-12-22 07:17:18,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:17:18,688 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 150 [2020-12-22 07:17:18,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:18,695 INFO L225 Difference]: With dead ends: 10329 [2020-12-22 07:17:18,695 INFO L226 Difference]: Without dead ends: 7553 [2020-12-22 07:17:18,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 07:17:18,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7553 states. [2020-12-22 07:17:19,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7553 to 3140. [2020-12-22 07:17:19,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3140 states. [2020-12-22 07:17:19,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3140 states to 3140 states and 3934 transitions. [2020-12-22 07:17:19,277 INFO L78 Accepts]: Start accepts. Automaton has 3140 states and 3934 transitions. Word has length 150 [2020-12-22 07:17:19,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:19,278 INFO L481 AbstractCegarLoop]: Abstraction has 3140 states and 3934 transitions. [2020-12-22 07:17:19,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:17:19,278 INFO L276 IsEmpty]: Start isEmpty. Operand 3140 states and 3934 transitions. [2020-12-22 07:17:19,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-12-22 07:17:19,280 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:19,280 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:17:19,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-12-22 07:17:19,281 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:17:19,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:19,281 INFO L82 PathProgramCache]: Analyzing trace with hash -2103246866, now seen corresponding path program 1 times [2020-12-22 07:17:19,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:19,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334749422] [2020-12-22 07:17:19,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:19,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:19,497 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:19,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334749422] [2020-12-22 07:17:19,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391865123] [2020-12-22 07:17:19,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:17:19,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:19,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 828 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 07:17:19,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:17:19,895 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:19,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:17:19,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 8 [2020-12-22 07:17:19,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980547561] [2020-12-22 07:17:19,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 07:17:19,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:19,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 07:17:19,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:17:19,896 INFO L87 Difference]: Start difference. First operand 3140 states and 3934 transitions. Second operand 8 states. [2020-12-22 07:17:21,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:21,739 INFO L93 Difference]: Finished difference Result 9217 states and 11812 transitions. [2020-12-22 07:17:21,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 07:17:21,740 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 151 [2020-12-22 07:17:21,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:21,746 INFO L225 Difference]: With dead ends: 9217 [2020-12-22 07:17:21,746 INFO L226 Difference]: Without dead ends: 6360 [2020-12-22 07:17:21,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 155 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2020-12-22 07:17:21,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6360 states. [2020-12-22 07:17:22,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6360 to 3140. [2020-12-22 07:17:22,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3140 states. [2020-12-22 07:17:22,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3140 states to 3140 states and 3906 transitions. [2020-12-22 07:17:22,380 INFO L78 Accepts]: Start accepts. Automaton has 3140 states and 3906 transitions. Word has length 151 [2020-12-22 07:17:22,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:22,380 INFO L481 AbstractCegarLoop]: Abstraction has 3140 states and 3906 transitions. [2020-12-22 07:17:22,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 07:17:22,380 INFO L276 IsEmpty]: Start isEmpty. Operand 3140 states and 3906 transitions. [2020-12-22 07:17:22,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-12-22 07:17:22,382 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:22,383 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:17:22,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-12-22 07:17:22,584 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:17:22,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:22,585 INFO L82 PathProgramCache]: Analyzing trace with hash 455514027, now seen corresponding path program 1 times [2020-12-22 07:17:22,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:22,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023603] [2020-12-22 07:17:22,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:22,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:22,675 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-12-22 07:17:22,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023603] [2020-12-22 07:17:22,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:17:22,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:17:22,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347868328] [2020-12-22 07:17:22,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:17:22,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:22,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:17:22,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:17:22,677 INFO L87 Difference]: Start difference. First operand 3140 states and 3906 transitions. Second operand 6 states. [2020-12-22 07:17:25,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:25,428 INFO L93 Difference]: Finished difference Result 14485 states and 18520 transitions. [2020-12-22 07:17:25,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 07:17:25,428 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2020-12-22 07:17:25,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:25,438 INFO L225 Difference]: With dead ends: 14485 [2020-12-22 07:17:25,438 INFO L226 Difference]: Without dead ends: 11628 [2020-12-22 07:17:25,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-12-22 07:17:25,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11628 states. [2020-12-22 07:17:26,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11628 to 3609. [2020-12-22 07:17:26,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3609 states. [2020-12-22 07:17:26,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3609 states to 3609 states and 4441 transitions. [2020-12-22 07:17:26,169 INFO L78 Accepts]: Start accepts. Automaton has 3609 states and 4441 transitions. Word has length 151 [2020-12-22 07:17:26,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:26,169 INFO L481 AbstractCegarLoop]: Abstraction has 3609 states and 4441 transitions. [2020-12-22 07:17:26,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:17:26,169 INFO L276 IsEmpty]: Start isEmpty. Operand 3609 states and 4441 transitions. [2020-12-22 07:17:26,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-12-22 07:17:26,172 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:26,172 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:17:26,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-12-22 07:17:26,173 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:17:26,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:26,173 INFO L82 PathProgramCache]: Analyzing trace with hash 566846588, now seen corresponding path program 1 times [2020-12-22 07:17:26,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:26,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146131991] [2020-12-22 07:17:26,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:26,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:26,259 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-22 07:17:26,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146131991] [2020-12-22 07:17:26,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:17:26,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:17:26,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921228450] [2020-12-22 07:17:26,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:17:26,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:26,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:17:26,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:17:26,261 INFO L87 Difference]: Start difference. First operand 3609 states and 4441 transitions. Second operand 4 states. [2020-12-22 07:17:27,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:27,551 INFO L93 Difference]: Finished difference Result 8739 states and 10893 transitions. [2020-12-22 07:17:27,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:17:27,551 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-12-22 07:17:27,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:27,556 INFO L225 Difference]: With dead ends: 8739 [2020-12-22 07:17:27,556 INFO L226 Difference]: Without dead ends: 5413 [2020-12-22 07:17:27,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:17:27,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5413 states. [2020-12-22 07:17:28,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5413 to 4313. [2020-12-22 07:17:28,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4313 states. [2020-12-22 07:17:28,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4313 states to 4313 states and 5298 transitions. [2020-12-22 07:17:28,370 INFO L78 Accepts]: Start accepts. Automaton has 4313 states and 5298 transitions. Word has length 152 [2020-12-22 07:17:28,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:28,371 INFO L481 AbstractCegarLoop]: Abstraction has 4313 states and 5298 transitions. [2020-12-22 07:17:28,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:17:28,371 INFO L276 IsEmpty]: Start isEmpty. Operand 4313 states and 5298 transitions. [2020-12-22 07:17:28,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-12-22 07:17:28,374 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:28,374 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:17:28,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-12-22 07:17:28,375 INFO L429 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:17:28,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:28,375 INFO L82 PathProgramCache]: Analyzing trace with hash 322051501, now seen corresponding path program 1 times [2020-12-22 07:17:28,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:28,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563137226] [2020-12-22 07:17:28,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:28,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:28,552 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:28,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563137226] [2020-12-22 07:17:28,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270942993] [2020-12-22 07:17:28,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:17:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:28,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 835 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 07:17:28,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:17:28,977 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:28,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:17:28,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-12-22 07:17:28,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652702668] [2020-12-22 07:17:28,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:17:28,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:28,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:17:28,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:17:28,978 INFO L87 Difference]: Start difference. First operand 4313 states and 5298 transitions. Second operand 7 states. [2020-12-22 07:17:31,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:31,384 INFO L93 Difference]: Finished difference Result 15041 states and 19000 transitions. [2020-12-22 07:17:31,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 07:17:31,385 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 152 [2020-12-22 07:17:31,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:31,395 INFO L225 Difference]: With dead ends: 15041 [2020-12-22 07:17:31,395 INFO L226 Difference]: Without dead ends: 11011 [2020-12-22 07:17:31,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-12-22 07:17:31,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11011 states. [2020-12-22 07:17:32,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11011 to 6777. [2020-12-22 07:17:32,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6777 states. [2020-12-22 07:17:32,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6777 states to 6777 states and 8351 transitions. [2020-12-22 07:17:32,788 INFO L78 Accepts]: Start accepts. Automaton has 6777 states and 8351 transitions. Word has length 152 [2020-12-22 07:17:32,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:32,788 INFO L481 AbstractCegarLoop]: Abstraction has 6777 states and 8351 transitions. [2020-12-22 07:17:32,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 07:17:32,788 INFO L276 IsEmpty]: Start isEmpty. Operand 6777 states and 8351 transitions. [2020-12-22 07:17:32,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-12-22 07:17:32,791 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:32,791 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:17:32,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-12-22 07:17:32,999 INFO L429 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:17:32,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:33,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1281823144, now seen corresponding path program 1 times [2020-12-22 07:17:33,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:33,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848948255] [2020-12-22 07:17:33,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:33,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:33,214 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 26 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:33,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848948255] [2020-12-22 07:17:33,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831155090] [2020-12-22 07:17:33,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:17:33,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:33,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-22 07:17:33,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:17:33,735 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 35 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:33,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:17:33,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2020-12-22 07:17:33,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545961115] [2020-12-22 07:17:33,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 07:17:33,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:33,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 07:17:33,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-12-22 07:17:33,739 INFO L87 Difference]: Start difference. First operand 6777 states and 8351 transitions. Second operand 14 states. [2020-12-22 07:17:53,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:53,805 INFO L93 Difference]: Finished difference Result 35628 states and 44792 transitions. [2020-12-22 07:17:53,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 314 states. [2020-12-22 07:17:53,805 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 152 [2020-12-22 07:17:53,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:53,831 INFO L225 Difference]: With dead ends: 35628 [2020-12-22 07:17:53,831 INFO L226 Difference]: Without dead ends: 30280 [2020-12-22 07:17:53,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 323 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49827 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=12787, Invalid=92513, Unknown=0, NotChecked=0, Total=105300 [2020-12-22 07:17:53,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30280 states. [2020-12-22 07:17:56,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30280 to 10340. [2020-12-22 07:17:56,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10340 states. [2020-12-22 07:17:56,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10340 states to 10340 states and 12751 transitions. [2020-12-22 07:17:56,352 INFO L78 Accepts]: Start accepts. Automaton has 10340 states and 12751 transitions. Word has length 152 [2020-12-22 07:17:56,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:56,352 INFO L481 AbstractCegarLoop]: Abstraction has 10340 states and 12751 transitions. [2020-12-22 07:17:56,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 07:17:56,352 INFO L276 IsEmpty]: Start isEmpty. Operand 10340 states and 12751 transitions. [2020-12-22 07:17:56,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-22 07:17:56,358 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:56,358 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:17:56,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2020-12-22 07:17:56,561 INFO L429 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:17:56,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:56,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1008679096, now seen corresponding path program 1 times [2020-12-22 07:17:56,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:56,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083765207] [2020-12-22 07:17:56,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:56,854 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:56,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083765207] [2020-12-22 07:17:56,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178389765] [2020-12-22 07:17:56,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:17:57,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:57,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 831 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 07:17:57,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:17:57,143 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: variable got div captured [2020-12-22 07:17:57,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 07:17:57,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 07:17:57,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197850706] [2020-12-22 07:17:57,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 07:17:57,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:57,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 07:17:57,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:17:57,145 INFO L87 Difference]: Start difference. First operand 10340 states and 12751 transitions. Second operand 8 states. [2020-12-22 07:18:00,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:18:00,624 INFO L93 Difference]: Finished difference Result 19942 states and 24885 transitions. [2020-12-22 07:18:00,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 07:18:00,625 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 153 [2020-12-22 07:18:00,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:18:00,636 INFO L225 Difference]: With dead ends: 19942 [2020-12-22 07:18:00,636 INFO L226 Difference]: Without dead ends: 12691 [2020-12-22 07:18:00,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2020-12-22 07:18:00,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12691 states. [2020-12-22 07:18:02,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12691 to 10101. [2020-12-22 07:18:02,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10101 states. [2020-12-22 07:18:02,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10101 states to 10101 states and 12437 transitions. [2020-12-22 07:18:02,959 INFO L78 Accepts]: Start accepts. Automaton has 10101 states and 12437 transitions. Word has length 153 [2020-12-22 07:18:02,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:18:02,959 INFO L481 AbstractCegarLoop]: Abstraction has 10101 states and 12437 transitions. [2020-12-22 07:18:02,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 07:18:02,960 INFO L276 IsEmpty]: Start isEmpty. Operand 10101 states and 12437 transitions. [2020-12-22 07:18:02,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-12-22 07:18:02,965 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:18:02,965 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:18:03,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:18:03,182 INFO L429 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:18:03,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:18:03,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1373202317, now seen corresponding path program 1 times [2020-12-22 07:18:03,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:18:03,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994893886] [2020-12-22 07:18:03,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:18:03,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:18:03,249 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 07:18:03,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994893886] [2020-12-22 07:18:03,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:18:03,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:18:03,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824243668] [2020-12-22 07:18:03,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:18:03,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:18:03,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:18:03,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:18:03,251 INFO L87 Difference]: Start difference. First operand 10101 states and 12437 transitions. Second operand 4 states. [2020-12-22 07:18:06,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:18:06,616 INFO L93 Difference]: Finished difference Result 22915 states and 28322 transitions. [2020-12-22 07:18:06,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:18:06,618 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-12-22 07:18:06,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:18:06,631 INFO L225 Difference]: With dead ends: 22915 [2020-12-22 07:18:06,631 INFO L226 Difference]: Without dead ends: 14567 [2020-12-22 07:18:06,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:18:06,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14567 states. [2020-12-22 07:18:08,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14567 to 10089. [2020-12-22 07:18:08,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10089 states. [2020-12-22 07:18:08,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10089 states to 10089 states and 12401 transitions. [2020-12-22 07:18:08,865 INFO L78 Accepts]: Start accepts. Automaton has 10089 states and 12401 transitions. Word has length 154 [2020-12-22 07:18:08,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:18:08,865 INFO L481 AbstractCegarLoop]: Abstraction has 10089 states and 12401 transitions. [2020-12-22 07:18:08,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:18:08,865 INFO L276 IsEmpty]: Start isEmpty. Operand 10089 states and 12401 transitions. [2020-12-22 07:18:08,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-12-22 07:18:08,870 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:18:08,870 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:18:08,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-12-22 07:18:08,870 INFO L429 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:18:08,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:18:08,871 INFO L82 PathProgramCache]: Analyzing trace with hash 188289643, now seen corresponding path program 1 times [2020-12-22 07:18:08,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:18:08,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957712571] [2020-12-22 07:18:08,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:18:08,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:18:09,102 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:18:09,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957712571] [2020-12-22 07:18:09,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090549175] [2020-12-22 07:18:09,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:18:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:18:09,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 875 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 07:18:09,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:18:09,576 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 20 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:18:09,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:18:09,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 16 [2020-12-22 07:18:09,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531157374] [2020-12-22 07:18:09,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 07:18:09,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:18:09,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 07:18:09,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-12-22 07:18:09,578 INFO L87 Difference]: Start difference. First operand 10089 states and 12401 transitions. Second operand 16 states. [2020-12-22 07:18:19,652 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-12-22 07:18:37,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:18:37,014 INFO L93 Difference]: Finished difference Result 53232 states and 65985 transitions. [2020-12-22 07:18:37,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2020-12-22 07:18:37,015 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 154 [2020-12-22 07:18:37,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:18:37,052 INFO L225 Difference]: With dead ends: 53232 [2020-12-22 07:18:37,053 INFO L226 Difference]: Without dead ends: 45770 [2020-12-22 07:18:37,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19709 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=6585, Invalid=42035, Unknown=0, NotChecked=0, Total=48620 [2020-12-22 07:18:37,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45770 states. [2020-12-22 07:18:40,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45770 to 13195. [2020-12-22 07:18:40,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13195 states. [2020-12-22 07:18:40,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13195 states to 13195 states and 16053 transitions. [2020-12-22 07:18:40,551 INFO L78 Accepts]: Start accepts. Automaton has 13195 states and 16053 transitions. Word has length 154 [2020-12-22 07:18:40,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:18:40,551 INFO L481 AbstractCegarLoop]: Abstraction has 13195 states and 16053 transitions. [2020-12-22 07:18:40,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 07:18:40,551 INFO L276 IsEmpty]: Start isEmpty. Operand 13195 states and 16053 transitions. [2020-12-22 07:18:40,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-12-22 07:18:40,556 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:18:40,556 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:18:40,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2020-12-22 07:18:40,770 INFO L429 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:18:40,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:18:40,771 INFO L82 PathProgramCache]: Analyzing trace with hash -521124872, now seen corresponding path program 1 times [2020-12-22 07:18:40,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:18:40,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956496973] [2020-12-22 07:18:40,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:18:40,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:18:40,828 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-12-22 07:18:40,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956496973] [2020-12-22 07:18:40,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:18:40,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:18:40,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830431127] [2020-12-22 07:18:40,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:18:40,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:18:40,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:18:40,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:18:40,830 INFO L87 Difference]: Start difference. First operand 13195 states and 16053 transitions. Second operand 4 states. [2020-12-22 07:18:42,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:18:42,979 INFO L93 Difference]: Finished difference Result 20728 states and 25275 transitions. [2020-12-22 07:18:42,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:18:42,980 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-12-22 07:18:42,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:18:42,987 INFO L225 Difference]: With dead ends: 20728 [2020-12-22 07:18:42,987 INFO L226 Difference]: Without dead ends: 8326 [2020-12-22 07:18:43,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:18:43,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8326 states. [2020-12-22 07:18:45,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8326 to 8298. [2020-12-22 07:18:45,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8298 states. [2020-12-22 07:18:45,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8298 states to 8298 states and 10065 transitions. [2020-12-22 07:18:45,238 INFO L78 Accepts]: Start accepts. Automaton has 8298 states and 10065 transitions. Word has length 154 [2020-12-22 07:18:45,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:18:45,238 INFO L481 AbstractCegarLoop]: Abstraction has 8298 states and 10065 transitions. [2020-12-22 07:18:45,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:18:45,238 INFO L276 IsEmpty]: Start isEmpty. Operand 8298 states and 10065 transitions. [2020-12-22 07:18:45,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-12-22 07:18:45,240 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:18:45,241 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:18:45,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-12-22 07:18:45,241 INFO L429 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:18:45,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:18:45,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1861432215, now seen corresponding path program 1 times [2020-12-22 07:18:45,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:18:45,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270413391] [2020-12-22 07:18:45,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:18:45,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:18:45,430 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 10 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:18:45,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270413391] [2020-12-22 07:18:45,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519967547] [2020-12-22 07:18:45,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:18:45,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:18:45,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 839 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 07:18:45,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:18:45,932 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:18:45,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:18:45,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2020-12-22 07:18:45,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121808658] [2020-12-22 07:18:45,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 07:18:45,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:18:45,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 07:18:45,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-12-22 07:18:45,933 INFO L87 Difference]: Start difference. First operand 8298 states and 10065 transitions. Second operand 13 states. [2020-12-22 07:19:01,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:19:01,283 INFO L93 Difference]: Finished difference Result 40418 states and 50722 transitions. [2020-12-22 07:19:01,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2020-12-22 07:19:01,284 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 155 [2020-12-22 07:19:01,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:19:01,312 INFO L225 Difference]: With dead ends: 40418 [2020-12-22 07:19:01,313 INFO L226 Difference]: Without dead ends: 34302 [2020-12-22 07:19:01,323 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7811 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2820, Invalid=16640, Unknown=0, NotChecked=0, Total=19460 [2020-12-22 07:19:01,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34302 states. [2020-12-22 07:19:03,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34302 to 7901. [2020-12-22 07:19:03,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7901 states. [2020-12-22 07:19:03,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7901 states to 7901 states and 9581 transitions. [2020-12-22 07:19:03,496 INFO L78 Accepts]: Start accepts. Automaton has 7901 states and 9581 transitions. Word has length 155 [2020-12-22 07:19:03,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:19:03,497 INFO L481 AbstractCegarLoop]: Abstraction has 7901 states and 9581 transitions. [2020-12-22 07:19:03,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 07:19:03,497 INFO L276 IsEmpty]: Start isEmpty. Operand 7901 states and 9581 transitions. [2020-12-22 07:19:03,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-12-22 07:19:03,499 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:19:03,499 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:19:03,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:19:03,700 INFO L429 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:19:03,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:19:03,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1867735863, now seen corresponding path program 1 times [2020-12-22 07:19:03,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:19:03,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298394520] [2020-12-22 07:19:03,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:19:03,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:19:03,978 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:19:03,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298394520] [2020-12-22 07:19:03,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433927905] [2020-12-22 07:19:03,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:19:04,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:19:04,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 07:19:04,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:19:04,461 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:19:04,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:19:04,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 8 [2020-12-22 07:19:04,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484187674] [2020-12-22 07:19:04,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 07:19:04,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:19:04,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 07:19:04,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:19:04,463 INFO L87 Difference]: Start difference. First operand 7901 states and 9581 transitions. Second operand 8 states. [2020-12-22 07:19:10,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:19:10,461 INFO L93 Difference]: Finished difference Result 23959 states and 29960 transitions. [2020-12-22 07:19:10,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 07:19:10,462 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 155 [2020-12-22 07:19:10,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:19:10,476 INFO L225 Difference]: With dead ends: 23959 [2020-12-22 07:19:10,476 INFO L226 Difference]: Without dead ends: 18355 [2020-12-22 07:19:10,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 162 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2020-12-22 07:19:10,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18355 states. [2020-12-22 07:19:12,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18355 to 7225. [2020-12-22 07:19:12,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7225 states. [2020-12-22 07:19:12,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7225 states to 7225 states and 8747 transitions. [2020-12-22 07:19:12,455 INFO L78 Accepts]: Start accepts. Automaton has 7225 states and 8747 transitions. Word has length 155 [2020-12-22 07:19:12,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:19:12,456 INFO L481 AbstractCegarLoop]: Abstraction has 7225 states and 8747 transitions. [2020-12-22 07:19:12,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 07:19:12,456 INFO L276 IsEmpty]: Start isEmpty. Operand 7225 states and 8747 transitions. [2020-12-22 07:19:12,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-12-22 07:19:12,458 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:19:12,458 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:19:12,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-12-22 07:19:12,659 INFO L429 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:19:12,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:19:12,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1268685670, now seen corresponding path program 1 times [2020-12-22 07:19:12,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:19:12,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871199860] [2020-12-22 07:19:12,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:19:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:19:12,720 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-12-22 07:19:12,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871199860] [2020-12-22 07:19:12,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:19:12,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:19:12,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723686646] [2020-12-22 07:19:12,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:19:12,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:19:12,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:19:12,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:19:12,722 INFO L87 Difference]: Start difference. First operand 7225 states and 8747 transitions. Second operand 4 states. [2020-12-22 07:19:14,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:19:14,408 INFO L93 Difference]: Finished difference Result 12823 states and 15575 transitions. [2020-12-22 07:19:14,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:19:14,409 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-12-22 07:19:14,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:19:14,414 INFO L225 Difference]: With dead ends: 12823 [2020-12-22 07:19:14,419 INFO L226 Difference]: Without dead ends: 5998 [2020-12-22 07:19:14,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:19:14,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5998 states. [2020-12-22 07:19:16,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5998 to 5998. [2020-12-22 07:19:16,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5998 states. [2020-12-22 07:19:16,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5998 states to 5998 states and 7250 transitions. [2020-12-22 07:19:16,029 INFO L78 Accepts]: Start accepts. Automaton has 5998 states and 7250 transitions. Word has length 155 [2020-12-22 07:19:16,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:19:16,029 INFO L481 AbstractCegarLoop]: Abstraction has 5998 states and 7250 transitions. [2020-12-22 07:19:16,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:19:16,029 INFO L276 IsEmpty]: Start isEmpty. Operand 5998 states and 7250 transitions. [2020-12-22 07:19:16,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-22 07:19:16,031 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:19:16,031 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:19:16,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-12-22 07:19:16,032 INFO L429 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:19:16,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:19:16,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1411621101, now seen corresponding path program 1 times [2020-12-22 07:19:16,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:19:16,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991412542] [2020-12-22 07:19:16,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:19:16,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:19:16,239 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 44 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:19:16,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991412542] [2020-12-22 07:19:16,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654400524] [2020-12-22 07:19:16,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:19:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:19:16,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 07:19:16,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:19:16,796 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:19:16,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 07:19:16,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 12 [2020-12-22 07:19:16,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817098238] [2020-12-22 07:19:16,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 07:19:16,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:19:16,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 07:19:16,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-12-22 07:19:16,797 INFO L87 Difference]: Start difference. First operand 5998 states and 7250 transitions. Second operand 9 states. [2020-12-22 07:19:19,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:19:19,531 INFO L93 Difference]: Finished difference Result 11236 states and 13697 transitions. [2020-12-22 07:19:19,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 07:19:19,532 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2020-12-22 07:19:19,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:19:19,537 INFO L225 Difference]: With dead ends: 11236 [2020-12-22 07:19:19,537 INFO L226 Difference]: Without dead ends: 6659 [2020-12-22 07:19:19,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2020-12-22 07:19:19,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6659 states. [2020-12-22 07:19:20,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6659 to 5545. [2020-12-22 07:19:20,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5545 states. [2020-12-22 07:19:20,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5545 states to 5545 states and 6702 transitions. [2020-12-22 07:19:20,944 INFO L78 Accepts]: Start accepts. Automaton has 5545 states and 6702 transitions. Word has length 157 [2020-12-22 07:19:20,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:19:20,944 INFO L481 AbstractCegarLoop]: Abstraction has 5545 states and 6702 transitions. [2020-12-22 07:19:20,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 07:19:20,944 INFO L276 IsEmpty]: Start isEmpty. Operand 5545 states and 6702 transitions. [2020-12-22 07:19:20,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-22 07:19:20,946 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:19:20,946 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:19:21,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2020-12-22 07:19:21,147 INFO L429 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:19:21,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:19:21,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1072880605, now seen corresponding path program 1 times [2020-12-22 07:19:21,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:19:21,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132391283] [2020-12-22 07:19:21,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:19:21,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:19:21,318 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 36 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:19:21,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132391283] [2020-12-22 07:19:21,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075399657] [2020-12-22 07:19:21,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:19:21,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:19:21,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 903 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-22 07:19:21,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:19:21,820 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 07:19:21,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 07:19:21,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2020-12-22 07:19:21,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315794286] [2020-12-22 07:19:21,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:19:21,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:19:21,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:19:21,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-12-22 07:19:21,821 INFO L87 Difference]: Start difference. First operand 5545 states and 6702 transitions. Second operand 6 states. [2020-12-22 07:19:25,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:19:25,301 INFO L93 Difference]: Finished difference Result 15764 states and 19476 transitions. [2020-12-22 07:19:25,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 07:19:25,302 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2020-12-22 07:19:25,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:19:25,311 INFO L225 Difference]: With dead ends: 15764 [2020-12-22 07:19:25,311 INFO L226 Difference]: Without dead ends: 11111 [2020-12-22 07:19:25,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2020-12-22 07:19:25,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11111 states. [2020-12-22 07:19:26,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11111 to 5542. [2020-12-22 07:19:26,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5542 states. [2020-12-22 07:19:26,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5542 states to 5542 states and 6683 transitions. [2020-12-22 07:19:26,897 INFO L78 Accepts]: Start accepts. Automaton has 5542 states and 6683 transitions. Word has length 157 [2020-12-22 07:19:26,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:19:26,897 INFO L481 AbstractCegarLoop]: Abstraction has 5542 states and 6683 transitions. [2020-12-22 07:19:26,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:19:26,898 INFO L276 IsEmpty]: Start isEmpty. Operand 5542 states and 6683 transitions. [2020-12-22 07:19:26,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-12-22 07:19:26,899 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:19:26,899 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:19:27,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-12-22 07:19:27,111 INFO L429 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:19:27,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:19:27,112 INFO L82 PathProgramCache]: Analyzing trace with hash -633030939, now seen corresponding path program 1 times [2020-12-22 07:19:27,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:19:27,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123736686] [2020-12-22 07:19:27,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:19:27,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:19:27,285 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 07:19:27,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123736686] [2020-12-22 07:19:27,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:19:27,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 07:19:27,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674319290] [2020-12-22 07:19:27,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:19:27,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:19:27,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:19:27,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:19:27,287 INFO L87 Difference]: Start difference. First operand 5542 states and 6683 transitions. Second operand 7 states. [2020-12-22 07:19:30,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:19:30,134 INFO L93 Difference]: Finished difference Result 12412 states and 15301 transitions. [2020-12-22 07:19:30,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:19:30,135 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 158 [2020-12-22 07:19:30,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:19:30,141 INFO L225 Difference]: With dead ends: 12412 [2020-12-22 07:19:30,141 INFO L226 Difference]: Without dead ends: 8373 [2020-12-22 07:19:30,144 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 07:19:30,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8373 states. [2020-12-22 07:19:31,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8373 to 5538. [2020-12-22 07:19:31,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5538 states. [2020-12-22 07:19:31,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5538 states to 5538 states and 6671 transitions. [2020-12-22 07:19:31,687 INFO L78 Accepts]: Start accepts. Automaton has 5538 states and 6671 transitions. Word has length 158 [2020-12-22 07:19:31,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:19:31,694 INFO L481 AbstractCegarLoop]: Abstraction has 5538 states and 6671 transitions. [2020-12-22 07:19:31,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 07:19:31,694 INFO L276 IsEmpty]: Start isEmpty. Operand 5538 states and 6671 transitions. [2020-12-22 07:19:31,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-12-22 07:19:31,697 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:19:31,697 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:19:31,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-12-22 07:19:31,697 INFO L429 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:19:31,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:19:31,698 INFO L82 PathProgramCache]: Analyzing trace with hash -188877085, now seen corresponding path program 1 times [2020-12-22 07:19:31,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:19:31,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308901387] [2020-12-22 07:19:31,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:19:31,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:19:31,972 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 44 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:19:31,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308901387] [2020-12-22 07:19:31,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892916182] [2020-12-22 07:19:31,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:19:32,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:19:32,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-22 07:19:32,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:19:32,723 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 11 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:19:32,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:19:32,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 14] total 20 [2020-12-22 07:19:32,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919373626] [2020-12-22 07:19:32,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-22 07:19:32,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:19:32,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-22 07:19:32,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2020-12-22 07:19:32,725 INFO L87 Difference]: Start difference. First operand 5538 states and 6671 transitions. Second operand 20 states. [2020-12-22 07:19:44,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:19:44,058 INFO L93 Difference]: Finished difference Result 13837 states and 16915 transitions. [2020-12-22 07:19:44,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2020-12-22 07:19:44,058 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 158 [2020-12-22 07:19:44,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:19:44,066 INFO L225 Difference]: With dead ends: 13837 [2020-12-22 07:19:44,066 INFO L226 Difference]: Without dead ends: 9393 [2020-12-22 07:19:44,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7284 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=2964, Invalid=16218, Unknown=0, NotChecked=0, Total=19182 [2020-12-22 07:19:44,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9393 states. [2020-12-22 07:19:45,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9393 to 5360. [2020-12-22 07:19:45,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5360 states. [2020-12-22 07:19:45,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5360 states to 5360 states and 6462 transitions. [2020-12-22 07:19:45,683 INFO L78 Accepts]: Start accepts. Automaton has 5360 states and 6462 transitions. Word has length 158 [2020-12-22 07:19:45,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:19:45,684 INFO L481 AbstractCegarLoop]: Abstraction has 5360 states and 6462 transitions. [2020-12-22 07:19:45,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-12-22 07:19:45,684 INFO L276 IsEmpty]: Start isEmpty. Operand 5360 states and 6462 transitions. [2020-12-22 07:19:45,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-12-22 07:19:45,685 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:19:45,685 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:19:45,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2020-12-22 07:19:45,887 INFO L429 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:19:45,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:19:45,888 INFO L82 PathProgramCache]: Analyzing trace with hash -2114719648, now seen corresponding path program 1 times [2020-12-22 07:19:45,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:19:45,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894914972] [2020-12-22 07:19:45,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:19:45,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:19:46,107 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 40 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:19:46,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894914972] [2020-12-22 07:19:46,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585615424] [2020-12-22 07:19:46,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:19:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:19:46,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 917 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 07:19:46,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:19:46,824 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 48 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:19:46,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:19:46,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12 [2020-12-22 07:19:46,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097923904] [2020-12-22 07:19:46,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 07:19:46,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:19:46,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 07:19:46,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-12-22 07:19:46,826 INFO L87 Difference]: Start difference. First operand 5360 states and 6462 transitions. Second operand 13 states. [2020-12-22 07:19:51,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:19:51,514 INFO L93 Difference]: Finished difference Result 13220 states and 16168 transitions. [2020-12-22 07:19:51,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-12-22 07:19:51,515 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 164 [2020-12-22 07:19:51,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:19:51,523 INFO L225 Difference]: With dead ends: 13220 [2020-12-22 07:19:51,523 INFO L226 Difference]: Without dead ends: 8919 [2020-12-22 07:19:51,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=472, Invalid=1508, Unknown=0, NotChecked=0, Total=1980 [2020-12-22 07:19:51,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8919 states. [2020-12-22 07:19:53,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8919 to 5287. [2020-12-22 07:19:53,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5287 states. [2020-12-22 07:19:53,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5287 states to 5287 states and 6362 transitions. [2020-12-22 07:19:53,125 INFO L78 Accepts]: Start accepts. Automaton has 5287 states and 6362 transitions. Word has length 164 [2020-12-22 07:19:53,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:19:53,125 INFO L481 AbstractCegarLoop]: Abstraction has 5287 states and 6362 transitions. [2020-12-22 07:19:53,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 07:19:53,125 INFO L276 IsEmpty]: Start isEmpty. Operand 5287 states and 6362 transitions. [2020-12-22 07:19:53,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-12-22 07:19:53,126 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:19:53,127 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:19:53,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:19:53,328 INFO L429 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:19:53,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:19:53,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1815246998, now seen corresponding path program 1 times [2020-12-22 07:19:53,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:19:53,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474283928] [2020-12-22 07:19:53,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:19:53,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:19:53,511 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 49 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:19:53,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474283928] [2020-12-22 07:19:53,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959625210] [2020-12-22 07:19:53,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:19:53,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:19:53,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 917 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-22 07:19:53,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:19:54,025 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 19 proven. 35 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 07:19:54,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:19:54,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 15 [2020-12-22 07:19:54,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952188434] [2020-12-22 07:19:54,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 07:19:54,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:19:54,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 07:19:54,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-12-22 07:19:54,027 INFO L87 Difference]: Start difference. First operand 5287 states and 6362 transitions. Second operand 15 states.